Credit to kinjall for the banner.

Introduction:

Balan Wonderworld is a collaboration between Square Enix and Sonic Team's former head, Yuji Naka. The game centers around a young boy and a young girl who have apparently lost their hearts and have become cold individuals. Eventually, they encounter a theatre that is headed by the magical and mysterious Balan. Balan promises to restore their hearts by having them see and resolve the problems of 12 other people who are facing hardships. The game features 3D platforming and puzzle solving through the use of costumes which are found throughout every level. Costumes can have various abilities that range from level traversal to combat. In terms of trophies, this list isn't difficult by any means, but this is the type of game where you might find yourself doing a lot of backtracking due to its nature. However, hopefully this guide will be able to organize things a bit so you know how to be as efficient as possible, or at least can provide some explanations for anything you find confusing, as the game can feel like it lacks explanation at times.


Walkthrough:

Step 1 - Play through the game gathering as many costumes and drops as you can
This step is pretty straightforward as you will mainly focus on beating the game and trying to find as many costumes as possible along the way. Be mindful that to progress the story, you do need a certain number of Balan Statues. Make sure you find the required number of statues as you go through the levels so that you can unlock the next set of chapters. As you play, I'm sure you'll also unlock a few miscellaneous trophies as well, and, if not, it's fine because you will definitely get them later. You'll also want to make sure you are gathering as many drops as possible, especially the red, blue, and pink ones. This is because you will need a fair amount to properly breed a King Tim to help unlock the Ultima Tim to get the Balan costume. I suggest hanging on to your red, pink, and blue drops until you are ready to start attempting to breed the King Tim. Yellow drops are common so you can go ahead and use them to feed Tims you already have and breed more so that you can increase your number of Tims you have to work with. After beating the game, this step is done.

Trophies unlocked in this step:
Storm Survivor  
Marine Mates  
Bug Buddies  
I Can Fly  
Triumph for Trees  
Kitty Companion  
Children of Chess
In Love at Last  
Feelings Laid Bare  
Painted Perfection  
Zero to Hero  
Seen Again  
Dress Rehearsal  
Maestro of Mystery  
Tea Tim(e)  
Casual Costume Fan  
Timdale  
Clockwork Happiness  
Negated  
Gate Guard  
Somebody Stop Me  
Balan Wannabe  
Balance Restored  
Combo Breaker  


Step 2 - Unlock Ultima Tim and the Balan Costume
For this step, you will need to unlock Ultima Tim to obtain the Balan Costume that is one of the most powerful costumes in the game as it basically allows you to fly. After you beat a chapter, when you go back to an act and complete it, you will instead receive a raindrop (rainbow drop) as a reward. This can be done multiple times as long as you defeat the boss of a chapter to reset it. You can also find raindrops by finding a Tim statue in an act. There is 1 Tim statue in every act of every chapter. When you find it, it typically rewards you with multiple raindrops. Once you return to the Isle of Tims, locate the large Tim Statue and feed it the raindrops to have the meter fill up. This meter has to be filled two times to proceed with the next step which is obtaining a King Tim. Check under Tim of Legend  to see how to breed a King Tim. Once you do this, present it to the statue to unlock the Ultima Tim. Ultima Tim will then carry you up to an island high in the sky which has the Balan costume. Once you unlock the Balan costume, feel free to start feeding your Tims with all of your drops (save any extra raindrops) to help make progress towards the Tower o' Tims. 

Trophies unlocked in this step:
Raindrops Keep Falling on my Head  
Hello, Father  
Tim of Legend  

Step 3 - Collect all Balan Statues and Costumes while making sure to complete any possible miscellaneous tasks along the way
This is the bulk of the work for the platinum right here. For this step, you will be going into every act and finding all Balan statues and costumes. Keep in mind that you may need a specific costume to access a statue, but many can be worked around by using the Balan costume to some degree. You can constantly check how many Balan statues you have in an act through the pause menu. Don't forget that Balan's Bout also gives a statue when you receive an EXCELLENT rating. So you will have to do this as well. The Balan's Bout Statues are usually at the end of the pause menu list with a gap between them and the statues you find throughout the act. All acts have 6 Balan Statues to be found while chapters 1 - 4 also have 1 Balan's Bout in each act, chapters 5 - 8 have 2 Balan's Bouts in each act, and chapters 9 - 12 have 3 Balan's Bouts in each act. You will also need to defeat every boss (except the final boss) by damaging them in 3 different ways. This allows you to obtain the 3 gold statues associated with every boss. For costumes, you can check how many costumes you are missing in a chapter by finding a checkpoint, then pressing an action button and going into the wardrobe. Keep in mind that Act 3 of every chapter has 1 costume (it's the last costume slot in each chapter tab). Since you will be searching high and low for Balan statues, you'll likely have opportunities to knock out some other trophies such as playing each mini-game and performing on all stages. Make sure to do these as you go through each act again.

Small Note: The list of statues can also help you pinpoint where in the act you might find them. The statues go into a slot according to the order they can be found in a level. For example, if you find a statue and it goes in the 2nd slot of the 6. That means you missed a statue earlier in the level, so you know to search around in an earlier location to find the missing statue.

Trophies unlocked in this step:
Drowning in Drops  
Balan's a Happy Chappy  
Balan's a Really Happy Chappy  
Costume Collector  
Full Wardrobe  
Timtopia  
Solid Sportsmanship  
Beginner Busker  
Veteran Busker  
Three-act Play  
Backstage Pass  
Heir Apparent  

Step 4 - Defeat all special Lanced Negati
This step is simple if you know where to find each Negati, but there is a luck based element to it. To even encounter Lanced Negati, you must unlock hard mode in a level. Hard mode is unlocked when you defeat enough Negati in a stage without taking a hit. You know you are in hard mode if red Negati start spawning instead of black ones. This is an indicator you have entered hard mode and can attempt to fight a Lanced Negati. A good thing is that once you unlock hard mode, you remain in it throughout all chapters until you take a hit. To obtain these trophies, simply go to a chapter with the specific Negati you are looking for, find a spot where Negati spawn (not the mini-boss one for the trophy), defeat them all, and wait in that spot for them to spawn again. Keep defeating the Negati as they spawn until you see them spawn in as a red color. This means you have entered hard mode, so now you want to locate a checkpoint you have not accessed yet and activate it. Once you activate it, proceed to the mini-boss area. If the boss is black and has a different, unique look (generally with wings and a weird looking mask) then it is the Lanced version and you will want to defeat it. If it is red and looks like the regular version, it is not lanced and you will want to Quit the Application and return to the PlayStation menu. This is because simply exiting the level to the Isle of Tims will save that form of the mini-boss. Restart the application, enter the level you were just in, get some costumes to use, and go to the area with the mini-boss again. You will still be in hard mode, so if the boss is Lanced proceed to defeat it. If not, quit and restart the application again. This can be done over and over until the correct version of the boss spawns. Look under each corresponding trophy to find the locations of each Negati you need for their trophy.

Trophies unlocked in this step:
Non-stop Negativity  
Lanced Endlessli  
Lanced Plenti  
Lanced Multipli  
Lanced Nessi
Ghostli  

Step 5 - Clean Up & Complete the Tower o' Tims
This is the final step as you should have everything done up to this point with exception of completing the Tower o' Tims. If you are missing anything, go ahead and get them out of the way as the Tower o' Tims will have you idling in the hub area. Completing the Tower o' Tims essentially involves you just being in the Isle of Tims while Tims perform activities that makes the counter go up. In order to complete the tower, the counter must reach 24,000. For this, you can idle in the Isle of Tims while they do all the work. If you see the counter slowing down or even stopping, this means your Tims are hungry so you must feed them drops. Make sure to feed them so that they continue to work, and if you need more drops, just replay acts. Don't forget that you will have to defeat the boss of a chapter to reset it. Once the Tower o' Tims is finished, you should be done with the game and have your platinum.

Trophies unlocked in this step:
Tick-tock  
A Theatre off the Beaten Path...