Monster High: New Ghoul in School Trophy Guide & Road Map

Monster High: New Ghoul in School
Monster High: New Ghoul in School Trophy Guide

Estimated trophy difficulty: 1.8/10 (Platinum Difficulty Rating)
Offline trophies: 24 (6, 11, 6, 1)
Online trophies: 0
Approximate amount of time to platinum: 8-12 hours (Estimated Time to Platinum)
Minimum number of playthroughs: 1
Number of missable trophies: 0
Glitched trophies: Find the Spiders School Spirit Full Wardrobe (also see Bugs & Glitches under Helpful Info section of the Roadmap)
Does difficulty affect trophies?: no difficulty settings
Do trophies stack?: yes, region stack, NA and EU for 2 plats
Do cheat codes disable trophies?: no cheats

Welcome to Monster High, new ghoul!

Monster High: New Ghoul in School is based on the popular Monster High fashion doll franchise, which was adapted into various types of merchandise, TV specials, DVDs, a web series, video games, etc. New Ghoul in School in particular is very much similar to the 2010 TV/DVD special, Monster High: New Ghoul at School, which is when Frankie Stein was the new ghoul to Monster High.

The trophies are pretty straight forward. The game is short, easy, and not a bad game for what it is. Though the franchise does have an adult fan base, it is mainly targeted towards kids and teens. Some of the dialogue can be humorous, especially if you choose the bad option during the story when given multiple choices, though you can opt to skip the dialogue if you are rushing towards platinum.

Bugs & Glitches: There are multiple bugs and glitches in the game, a few of which are game breaking if you are unlucky enough to fall victim to them. For the major ones, some people have reported the trophies for Find the Spiders, School Spirit, and Full Wardrobe not unlocking (see their respective trophies for details). One of the last major bugs/glitches is one that I experienced myself towards the end of game that required me to start a new game over; which is how unstable the game gets when you exit an area into a new area. You may notice small brief skips in the pink loading circle as though it is about to freeze multiple times. Sometimes it can freeze your PS3 and require you to do a "hard reset", but this won't happen to everyone as I did not freeze at all during my 2nd playthrough compared to 3 to 5 times during 1st playthrough. This usually isn't too big of a deal. However, if the game is auto-saving during one of these freezes, there is a high chance your save data will corrupt after the PS3 restores the file system after hard reset. There's a reason most games with the "auto-save" feature will have a message telling you not to turn off your system while the game is auto-saving. The solution to this matter is to never under any circumstances exit/enter an area while the game is auto-saving, which is indicated by the blue auto-save circle on screen while it auto-saves. Wait until it disappears to change areas, otherwise you will be increasing your risk of game freezing at the same time, which in turn increases your risk of saved data corruption. The only times the unstable loading and auto-saving has to happen at the same time no matter what is when you do the Get to Class objective to progress time of day, or go home/leave home, etc. However I never noticed any issues during these, which may be because the auto-save starts during the transition rather than before you entered/exited. If your file corrupts you will have to delete the corrupt data in saved data utility and start all over. There is no known fix for this that I'm aware of. For the minor bugs/glitches, sometimes certain objectives will not show up on the MAPP including Get to Class, in which case you will have to select it in your iCoffin's objective list instead if you want to make it your active objective. Another bug I noticed is where sometimes something you had already bought in the MonStore would show up again with no "Sold Out" label as though you never previously bought it. First time it happened I thought I made a mistake and didn't buy it when I meant to, but after it happened multiple times I knew it wasn't me. Just buy the item again and it shouldn't do it anymore after that.

iCoffin: Your iCoffin that you get at the start of the game is very useful. You can see what objectives you have and choose which one you want active. Sometimes objectives require you to make them your active objective before you can trigger them. So if you go to the objective location and nothing is there or happening, you may need to make it your active objective. You can also view a MAPP of the school that shows you the locations of events/objectives. Green markers show the location of story objectives. Yellow markers show the location of club objectives, standalone objectives, and time of day progression objectives.

Ways to get around: These should seem obvious, but I have seen people not know how to get to certain parts of some areas due to not realizing that any ladders or rails that look like bones can be climbed on. Also, there are certain things that can be jumped on to give you a bounce. And finally, some boxes are movable, which can be used to reach higher places. Also, when climbing across horizontal bone grasps or up bone ladders, you can speed up the process by jumping the direction you are moving and holding the direction of the bone grasp/ladder to re-grab, and repeat until you reach the end.

How to read the Trophy Guide: Any time I refer to locations or areas in the guide, this refers to the names that show up on screen after you walk through a door/enter a new area that tells you your location. Since your MAPP does not label these locations, at least cross referencing my listed location with your location when entering an area is the next best option to make searching easier, plus you'll come to know most locations by heart as you play. Before each location I list what level of the school it is on as shown on the MAPP. Also, any time I refer to a direction like north, east, south, west, etc, I am referring to those directions while looking at the MAPP.

Step 1: Play through the game getting all trophies except Full Wardrobe.

For this step simply work on doing every event available at each time of the day, getting all collectibles, and other trophies. But before you begin your playthrough, keep the info provided under the Full Wardrobe trophy in mind. Be diligent in collecting spirits coins as this will reduce the chances of having an endgame grind for Step 2. See Money Bags for the various ways to earn spirit coins. See Full Wardrobe for details on why you should not get lazy on collecting spirit coins if you don't want to end up with a boring endgame grind. The info I provide under those trophies should prevent you from having a huge endgame grind. During this step you will unlock the following trophies:

Meet the Fearleaders
Meet the Council
Buy Clothing Online
Code Crackin'
Cookies For All!
Step Up!
Tidy Up!
Ring-a-Ding-Ding
Money Bags
Creepateria Upgrade
Casketball Court Upgrade
Fashion Club
Environmental Club
Robotics Club
Cooking Club
Comic Book Club
A Helping Hand
Maze Runner
Social Butterfly
School Spirit
Find the Spiders
Save the School!

Step 2: Full Wardrobe

Once you have every other trophy, go ahead and start buying out everything at the MonStore, progressing time, repeat until you unlock the Full Wardrobe trophy and the platinum. See Full Wardrobe for details. During this step you will unlock the following trophies:

Full Wardrobe
Complete

[PST Would Like To Thank StarlightDoll For This Roadmap]

Complete

All other Trophies Complete
(1)
The new ghoul in school has earned all other trophies and got themselves a platinum trophy. Way to go new ghoul!
Meet the Fearleaders

Complete first Fearleading Event.
Story Related. Cannot be missed.

You will get this trophy after completing all objectives of the Meet the Fearleaders event.
Meet the Council

Complete first Council Event.
Story Related. Cannot be missed.

You will get this trophy after completing the Meet the Council event.
Buy Clothing Online

Purchase Clothing Online.
Once you buy your first article of clothing the trophy will unlock. See Full Wardrobe for details.
Code Crackin'

Find and use a Locker Code.

There are 20 lockers to open. Locker codes can be spotted by the gold lock scrawled on the walls in various places. Examining them will reveal a 3 digit locker code. Once you have a code, the matching locker will have an orange exclamation mark above it. All lockers are located in the hallways, with the exception of the lockers in the Level 1 Swimming Pool.

This trophy will unlock after you unlock your first locker, regardless of whether or not you actually collected a locker code before doing so. There are actually no trophies in the game requiring you to collect locker codes, despite what the description on this trophy reads. As a result I am not providing a list of the locations of the locker codes. You will need to unlock all of the lockers if you want to find all Spirit Spiders and Dusty Pennants for their trophies as some of them are hidden in lockers, and also to get extra spirit coins. The following is a list of locker locations, the code to open, and what's inside.

Level 1 East Hall
#1 (688) Spirit Spider
#2 (802) spirit coins +15
#3 (241) Dusty Pennant

Level 1 North Hall
#4 (573) Dusty Pennant
#5 (027) Spirit Spider

Level 1 West Hall
#6 (355) spirit coins +15
#7 (734) Spirit Spider
#8 (469) Dusty Pennant

Level 2 South Hall
#9 (196) Dusty Pennant
#10 (910) Spirit Spider
#11 (258) spirit coins +15
#12 (172) Spirit Spider

Level 2 North Hall
#13 (039) Dusty Pennant
#14 (366) Spirit Spider
#15 (801) spirit coins +15
#16 (772) Dusty Pennant
#17 (340) Spirit Spider

Level 1 Swimming Pool
#18 (093) Dusty Pennant
#19 (579) Spirit Spider
#20 (832) spirit coins +15
Cookies For All!

Complete a Fundraising Event.
Story Related. Cannot be missed.

You will get this trophy during one of the Student Council events.
Step Up!

Collect all Cheer Steps.
Story Related. Cannot be missed.

You will be locating these during a few Fearleading events. Before the location of the cheer steps will show on your MAPP, you need to solve a riddle. If you are needing help, the answers to the riddles can be found in the spoiler below. Once at each location, press to help you locate the cheer steps. Once you get all 9 cheer steps, 3 for each riddle, the trophy will unlock.

"What runs, has no feet, and never gets tired?" WATER
"What has a million stories, but cannot tell them?" LIBRARY
"I'm in the spot-light every night, but I've never put on a single performance. What am I?" STAGE
Tidy Up!

Leave for School with a Tidy Room.
After you wake up in the morning for a new day of school, make your bed. Afterwards go to your closet and choose the "tidy up" option to remove the clothes from the floor. You can do the tidy up part before you go to bed and it will still count. You can first get this during the Morning of your 2nd day. After leaving for school the trophy will unlock.

From that point on be sure your bed is made and no clothes are spread out on the floor so you'll get the Tidy Wardrobe and Make the Bed bonuses when you go to bed each night for more spirit coins. If you ever choose to change clothes in the closet this will put clothes back on the floor, so be sure to tidy up again before going to bed if you change clothes.
Ring-a-Ding-Ding

Ring the Bell in the Bell Tower
You can get this trophy right from the start of the game. Go to Level 1 Foyer, which is basically the school's indoors entrance area. The stairs on south side will converge on a door that leads to the Bell Tower. There will be a sign with a bell on it next to the door. Once inside make your way to the top and once you reach the top with the bell, there will be a lever on the wall. Pull it to ring the bell and the trophy will unlock, but don't leave just yet. See Money Bags trophy for more info related to the Bell Tower.
Money Bags

Have over 1000 Spirit Coins.
This is not cumulative, meaning that you must have 1000 spirit coins on you at once. You can actually get this trophy at start of the game by going to the Bell Tower and ringing the bell 7 times until a cutscene plays showing a robot falling out of the bell. After his dialogue and he walks out, you will get 1000 spirit coins. See Ring-a-Ding-Ding if you need help finding the Bell Tower.

You can find spirit coins in various places around the school. If you examine the various ECTO FRUITS vending machines around the school, they will give you 1 spirit coin. Later on during the story, these will be upgraded to BOO BOO FRUITS vending machines that give 3 coins each. You will also come across strings of flying coins roaming the halls. Collecting these in order starting with the gold one will give you double the coins at 10 coins instead of 5. These have a chance to spawn each time you enter a Hall area. The gold coins are basically worth 2 coins each. You also get various bonuses every night when you go to bed. I recommend not spending any coins on anything except for the daily 50% off sales on clothing until after you have unlocked every trophy in the game except the Full Wardrobe trophy. See Full Wardrobe for more details on clothing.

The following is a highlight of the different ways to earn coins:
- Ring Bell Tower bell 7 times to make robot fall out +1000 (one time only)
- stationary coins +1 (respawn after loading game)
- string of flying coins out of order +5 (random chance to spawn when entering a hallway area, less common chance for more than one to spawn)
- string of flying coins, gold coin first +10 (random chance to spawn when entering a hallway area, less common chance for more than one to spawn)
- ECTO FRUITS vending machines +1 (refills on a daily basis)
- BOO BOO FRUITS vending machines +3 (replaces ECTO FRUITS machines later in story, refills on a daily basis)
- spirit coins found in some lockers +15 (one time only)
- Objectives Completed bonus +5 each (one time only when going to bed for each completed that day)
- Spirit Spiders Found bonus +5 each (one time only when going to bed for each collected that day)
- Dusty Pennants Found bonus +5 each (one time only when going to bed for each collected that day)
- Lockers Opened bonus +5 each (one time only when going to bed for each opened that day)
- Tidy Wardrobe bonus +10 (daily if no clothes are on your dreadroom floor when going to bed, if there are choose the Tidy Up option in closet)
- Made the Bed bonus +10 (daily when going to bed if you made your bed at some point during the day, either Morning or After School)
- Pocket Change bonus +10 (daily when going to bed, no requirement to get)
Creepateria Upgrade

Upgrade the Creepateria.
Story Related. Cannot be missed.

You will get this trophy after one of the Student Council events.
Casketball Court Upgrade

Upgrade the Casketball Court.
Story Related. Cannot be missed.

You will get this trophy after one of the Student Council events.
Fashion Club

Complete Fashion Club Events.
These events are marked yellow on the MAPP and the character that starts them will have a blue exclamation mark above their head. The character you need to speak to will always have a blue exclamation mark above their head regardless of time of day and their location, but you can only start the event by speaking to them when they are at the location of the yellow MAPP marker. Any other time of day and they will say, "I can't do that now." The Fashion Club events can be started during After School by speaking to Jinafire Long at Level 1 Auditorium.
Environmental Club

Complete Environmental Club Events.
These events are marked yellow on the MAPP and the character that starts them will have a blue exclamation mark above their head. The character that you need to speak to will always have a blue exclamation mark above their head regardless of time of day and their location, but you can only start the event by speaking to them when they are at the location of the yellow MAPP marker. Any other time of day and they will say, "I can't do that now." The Enviro Club events can be started during Morning by speaking to Iris Clops at Level 1 Quadrangle.
Robotics Club

Complete Robotics Club Events.
These events are marked yellow on the MAPP and the character that starts them will have a blue exclamation mark above their head. The character that you need to speak to will always have a blue exclamation mark above their head regardless of time of day and their location, but you can only start the event by speaking to them when they are at the location of the yellow MAPP marker. Any other time of day and they will say, "I can't do that now." The Robotics Club events can be started during After School by speaking to Robecca Steam at Level 3 Attic.
Cooking Club

Complete Cooking Club Events.
These events are marked yellow on the MAPP and the character that starts them will have a blue exclamation mark above their head. The character that you need to speak to will always have a blue exclamation mark above their head regardless of time of day and their location, but you can only start the event by speaking to them when they are at the location of the yellow MAPP marker. Any other time of day and they will say, "I can't do that now." The Cooking Club events can be started during Lunch by speaking to Deuce Gorgon at Level 1 Home Ick.
Comic Book Club

Complete Comic Book Club Events.
These events are marked yellow on the MAPP and the character that starts them will have a blue exclamation mark above their head. The character that you need to speak to will always have a blue exclamation mark above their head regardless of time of day and their location, but you can only start the event by speaking to them when they are at the location of the yellow MAPP marker. Any other time of day and they will say, "I can't do that now." The Comic Book Club events can be started during After School by speaking to Ghoulia Yelps at Level 1 Library.
A Helping Hand

Complete Standalone Events.
Standalone events are all the extra events that are not story events or Club events, and like Club events are entirely optional. You will have to progress through Club events for standalone events to start appearing. Guys and ghouls that give these events will have a blue exclamation mark above them with a yellow MAPP marker very much like Club events do.
Maze Runner

Find all the Shortcuts.
(2)
There are 4 shortcuts in the school, and you must use all of them. There are a few people I saw in places over the internet saying you only need 3, but I have thoroughly tested this on multiple accounts doing different ones in different order to ensure all 4 counted as shortcuts, and the trophy only unlocks after using all 4. Each line below shows the 2 locations the shortcut connects between, and what needs to be examined at each to use the shortcut. You only need to travel 1 way for each for it to count as used.

Level 1 Courtyard (coffin in graveyard) <> Level 3 Attic (coffin)
Level 2 North Hall (movable statue) <> Level 1 East Hall (movable statue)
Level 1 Foyer (elevator) <> Level 1 Auditorium (elevator)
Level 1 Library (southwest bookcase) <> Level 1 North Hall (fountain)
Social Butterfly

Meet all characters in Monster High.
(1)
You must talk to every character at Monster High. All of them will be met during events with the exception of 3 of them. Check back here after completing all events to find whoever you are missing. Their locations will depend on what time of day it is, but they will always be found in the same place at those particular times of the day, with the exception being certain events that might move them to a unique spot temporarily during said time of day. For the ones that do not appear during events, I have listed their location during Morning only to reduce unnecessary clutter. The following list is ordered the same way they appear in the Contacts section of your iCoffin, if you want to use it as a reference for those that do appear in your Contacts:
- Abbey Bominable
- Bloodgood
- Bonita Femur
- Catrine DeMew
- Catty Noir
- Clawd Wolf
- Clawdeen Wolf
- Cleo De Nile
- Deuce Gorgon
- Draculaura
- Elissabat
- Frankie Stein
- Ghoulia Yelps
- Gigi Grant
- Gilda Goldstag
- Gil Webber
- Heath Burns
- Holt Hyde
- Howleen Wolf
- Invisi Billy
- Iris Clops
- Jackson Jekyll
- Jane Boolittle
- Jinafire Long
- Lagoona Blue
- Lorna Mcnessie (Level 1 Study Howl during Morning)
- Manny Taur (does not appear in your Contacts)
- Marisol Coxi
- Meowlody
- Mr. Hackington (does not appear in your Contacts)
- Mr. Rotter (Level 2 North Hall during Morning)(does not appear in your Contacts)
- Neighthan Rot
- Operetta
- Purrsephone
- Robecca Steam
- Rochelle Goyle
- Scarah Screams (Level 1 Study Howl during Morning)
- Sirena von Boo
- Skelita Calaveras
- Slomo Mortavitch
- Spectra Vondergeist
- Toralei Stripe
- Twyla
- Venus McFlytrap
FUN FACT: Two of the 44 characters required are actually the same character. This is because Holt Hyde and Jackson Jekyll are two sides of the same character, as a play on Dr. Jekyll and Mr. Hyde. As a result you will never find these two characters in the school at the same time.
School Spirit

Collect all Dusty Pennants.

Glitch Warning: This trophy has not unlocked for some people after collecting all Dusty Pennants, though this seems to be rare. There is no fix for this yet. The only solution is to start a new game in a new slot and collect them all again, which will only put you back around 15 to 30 minutes. One option is to back up save before collecting the last pennant, then if it doesn't unlock just reload your previous save and try again. This depends on what point the glitch becomes set in stone, as whatever causes the glitch could of activated before you even collected last pennant, meaning the backing up save method is not guaranteed to work.

There are 20 Dusty Pennants to collect. All of them can be found from the start of the game. There is no way to keep track in-game of which ones you've already collected unless you use the following list as a checklist.

Level 1 Courtyard
-behind some bushes in southeast corner

Level 1 Foyer
-southeast corner

Level 1 Library
-southeast corner on top of bookcase

Level 1 East Hall
-inside locker #3 (locker code: 241)

Level 1 Auditorium
-on top of sheet covered crates behind stage curtains

Level 1 West Hall
-inside locker #8 (locker code: 469)

Level 1 Study Howl
-southwest corner

Level 1 North Hall
-inside locker #4 (locker code: 573)

Level 1 Casketball Court
-northwest corner on raised metal platform

Level 1 Swimming Pool
-bottom of pool
-inside locker #18 (locker code: 093)

Level 2 South Hall
-inside locker #9 (locker code: 196)

Level 2 Biteology
-rafters above room

Level 2 Dead Languages
-southeast corner

Level 2 North Hall
-inside locker #13 (locker code: 039)
-inside locker #16 (locker code: 772)

Level 2 Clawculus
-southeast corner on top of bookcase

Level 2 Ectonomics
-west wall above bookcase

Level 3 Bell Tower
-top of tower in open

Level 3 Attic
-southeast corner on a sheet covered crate
Find the Spiders

Collect all Spirit Spiders.

Glitch Warning: This trophy has not unlocked for some people after collecting all Spirit Spiders, though this seems to be rare. There is no fix for this yet. The only solution is to start a new game in a new slot and collect them all again, which will only put you back around 30 to 45 minutes. One option is to back up save before collecting the last spider, then if it doesn't unlock just reload your previous save and try again. This depends on what point the glitch becomes set in stone, as whatever causes the glitch could of activated before you even collected last spider, meaning the backing up save method is not guaranteed to work.

There are 30 Spirit Spiders to collect; all of them can be found from the start of the game. There is no way to keep track in-game of which ones you've already collected unless you use the following list as a checklist.

Level 1 Courtyard
-northwest corner of graveyard surrounded by tombstones

Level 1 Foyer
-north side on upper ledge outside of Bloodgood's office

Level 1 Library
-southwest corner on top of west wall bookcase

Level 1 East Hall
-open storage room, can be seen on MAPP off east side in center of hall
-inside locker #1 (locker code: 688)

Level 1 Mad Science
-upper balcony

Level 1 Auditorium
-upper balcony
-backstage area on raised metal platform, must pull 2 levers up high

Level 1 Quadrangle
-northwest corner

Level 1 West Hall
-inside locker #7 (locker code: 734)

Level 1 Creepateria
-on counter in kitchen

Level 1 Study Howl
-southeast corner on top of south wall bookcase

Level 1 Home Ick
-on top of fridge

Level 1 North Hall
-inside locker #5 (locker code: 027)

Level 1 Casketball Court
-north side, top of bleachers
-southwest corner on top of cabinets

Level 1 Swimming Pool
-floating high above pool, use diving board to reach
-inside locker #19 (locker code: 579)

Level 2 South Hall
-inside locker #10 (locker code: 910)
-inside locker #12 (locker code: 172)

Level 2 Biteology
-rafters above room

Level 2 Teacher's Lounge
-east wall up high, use fridge to reach bone grasps

Level 2 North Hall
-southwest corner in dead-end room
-inside locker #14 (locker code: 366)
-inside locker #17 (locker code: 340)

Level 2 Clawculus
-northwest corner on bookcase

Level 2 Ectonomics
-southeast corner

Level 3 Bell Tower
-above cabinet to right of entrance

Level 3 Attic
-south side on sheet covered crate
-south side on sheet covered crate
Save the School!

Save the School!
Story Related. Cannot be missed.

You will get this after clearing the game's storyline and saving the school, aka all green objectives. The storyline lasts about 17 in-game days. No Club Event or Standalone Event is required for this.
Full Wardrobe

Obtain all Clothing Items.
(1)
Glitch Warning: Some players have reported an issue where the trophy does not unlock even though they have bought all clothing and have a 100% save file. When this happens, no new clothing goes on sale at the MonStore as everything has already been bought. There is currently no known fix for this yet. The only option is to start the game over. One thing you can try is backing up save file before buying the last article of clothing, though the only way you will know if it's the last is if you've been using my list of all clothing provided below as a checklist marking them off as you buy them. Then buy the last one and wait a minute to see if trophy unlocks. If not restore backed up save and try again.

I have no idea if this would work or not since the trophy never glitched on me, but it's something.

You can go shopping at almost any point in the game once you get your iCoffin at the very start of the game. Once you get it, open it with and the first option should say Shopping, which will take you to the MonStore interface. The right hand side will show an item on sale for 50% off. Until you finish everything else in the game you should only focus on buying the 50% off items. This will make the endgame grind shorter. Every now and then you will get a notice in the bottom right of your screen with a shopping bag symbol when the store's inventory changes. There will be a sound effect along with it, so it's hard to miss. This happens 3 times a day. Once during Morning, once during Lunch, and once during After School. Make sure you check the 50% off item every time this happens or any time before progressing time forward by Get to Class objective or going to bed. Sometimes the inventory will show you some clothes you already own, which will say Sold Out on them. This is normal.

If you have to grind this trophy from scratch due to it glitching and not unlocking and you need to start new game for it, just go through the school collecting all coins again, all collectibles, opening all lockers, then doing all objectives so you get the bedtime bonuses for all collectibles/lockers, plus other bonuses mentioned under Money Bags. Also do the bell tower trick for 1000 coins. You can also collect coins, auto-save, quit to menu and reload game trick to get stationary coins to respawn method, which is also nice if you have to do endgame grinding for this due to being short of coins. You can still get some bedtime bonuses after doing everything else in game for +30 bonus coins for Tidy Wardrobe, Made the Bed, and Pocket Change.

The following is a list of all 128 articles of clothing in the game that you'll need to own for the trophy. You will start the game with 150 spirit coins and all of the starter outfits in your wardrobe that were options when you created your character, with the exception of PJs. The number on the left is the sale price, while the number on the right is full price. The total cost of buying everything on sale vs full price comes to 3009 spirit coins for sale, and full price at 6088. But these numbers also include the starter outfits you start with. Subtract those and you can mark off around 400 to 500 spirit coins So all in all you will probably end up spending around 4000 spirit coins give or take depending on items you get for sale. It cost me less only because I did not do any of the optional events until after I cleared the story events. Most people will be doing everything along with the story, so the amount of days you'll be buying sale only items will be the length of the story at around 17 days or so, but I had a bunch of extra days of buying sale items since I started other events after story. I had around 5000 spirit coins once I finished everything and started buying everything. Once done and unlocking the trophy I was reduced to just over 2000 spirit coins. So the endgame buyout only cost me almost 3000 spirit coins. This is why I put the number around 4000 for most people.

There is no way in-game to keep track of which items you have already bought. You can use the following list ordered alphabetically as a checklist and mark them off as you buy them. Or, if you go through the game without doing that and trophy doesn't unlock when there's nothing else to buy, you can cross-reference this list with the items in your closet going through each category one by one and check them off to see if you have everything. If you do, it means you fell victim to the glitch.
- Aqua Crop Sweater (8)(16)
- Aqua Leggings (41)(83)
- Aqua Skinny (41)(83)
- Black Bandage (37)(74)
- Black Bat (31)(62)
- Black Bell (24)(49)
- Black Crop (12)(25)
- Black Crosstank (11)(23)
- Black Diamond (23)(46)
- Black Flare (34)(69)
- Black Formal (10)(20)
- Black Halftop (14)(29)
- Black Heels (25)(51) (already have in wardrobe)
- Black Kneelength (42)(84)
- Black Leggings (41)(83)
- Black Skirt (32)(65)
- Black Skull (1)(2)
- Black Spiderweb (4)(9)
- Black Straps (23)(47)
- Black Tank (16)(33)
- Black Tartan (7)(14)
- Blue Bandage (36)(73)
- Blue Gem (21)(43)
- Blue Ivy (4)(8)
- Blue Kneelength (43)(86)
- Blue Layer (30)(61)
- Blue Leggings (41)(83)
- Blue Lockboot (18)(36)
- Blue Pencil (34)(68)
- Blue Pendant (30)(60)
- Blue Skinny (41)(83) (already have in wardrobe)
- Blue Spiderweb (5)(11)
- Blue Straps (23)(46)
- Coral Crop Sweater (8)(17)
- Gold Diamond (22)(45)
- Gold Double (29)(58)
- Gold Hoops (28)(56)
- Gold Snowflake (25)(51)
- Green Ankle Boots (27)(55)
- Green Arrow (26)(53)
- Green Bat (30)(61)
- Green Bell (25)(50)
- Green Boots (24)(49)
- Green Clip (24)(48)
- Green Feathers (32)(65)
- Green Flare (35)(70)
- Green Formal (9)(19)
- Green Gem (22)(44)
- Green Gem Ring (31)(63)
- Green Heels (26)(53)
- Green Kneehigh (20)(41)
- Green Kneelength (41)(83)
- Green Leggings (41)(83)
- Green Lockboot (18)(37)
- Green Pendant (29)(59)
- Green Pleated (29)(58) (already have in wardrobe)
- Green Skinny (41)(83)
- Green Snowflake (25)(50)
- Green Tank (17)(34)
- Grey Kneehigh (20)(41)
- Grey Pumps (22)(44)(already have in wardrobe)
- Midnight Skinny (41)(83)
- Midnight Skirt (31)(63)(already have in wardrobe)
- Mustard Tartan (6)(13)
- Orange Layer (31)(62)
- Orange Leggings (41)(83)
- Orange Pencil (33)(67)
- Orange Skinny (41)(83)
- Peach Halftop (14)(28)(already have in wardrobe)
- Pineapple Leggings (41)(83)
- Pink Clip (23)(47)
- Pink Crop Sweater (7)(15)
- Pink Diamond (22)(45)
- Pink Feathers (32)(64)
- Pink Gem (22)(45)
- Pink Gem Ring (31)(62)
- Pink Halter (15)(30)(already have in wardrobe)
- Pink Kneehigh (19)(39)(already have in wardrobe)
- Pink Kneelength (41)(82)
- Pink Layer (30)(60)
- Pink Skinny (41)(83)
- Purple Ankle Boots (28)(56)
- Purple Arrow (27)(54)
- Purple Bat (30)(61)
- Purple Boots (24)(48)
- Purple Crosstank (11)(22)
- Purple Flare (35)(71)
- Purple Formal (9)(18)
- Purple Gem Ring (31)(63)
- Purple Halftop (13)(27)
- Purple Halter (16)(32)
- Purple Ivy (3)(7)
- Purple Leggings (41)(83)
- Purple Pencil (33)(66)
- Purple Pleated (28)(57)
- Purple Tank (17)(35)
- Red Bell (24)(49)
- Red Boots (25)(50)
- Red Heels (26)(52)
- Red Ivy (2)(5)
- Red Kneelength (40)(81)
- Red Leggings (41)(83)
- Red Lockboot (19)(38)
- Red Pendant (30)(61)
- Red Pleated (29)(59)
- Red Polka (1)(3)
- Red Pumps (21)(42)
- Red Skinny (41)(83)
- Red Snowflake (25)(51)
- Red Tartan (6)(12)
- Silver Arrow (26)(52)
- Silver Double (28)(57)
- Silver Feathers (32)(64)
- Silver Hoops (27)(55)
- Tree Green (2)(4)
- White Bandage (36)(72)
- White Clip (24)(48)
- White Crop (12)(24) (already have in wardrobe)
- White Crop 2 (13)(26)
- White Kneelength (42)(85)
- White Skirt (32)(64)
- White Spiderweb (5)(10)
- White Straps (22)(45)
- Yellow Ankle Boots (27)(54)
- Yellow Crosstank (10)(21)
- Yellow Halter (15)(31)
- Yellow Ivy (3)(6)
- Yellow Pumps (21)(43)