Killing Floor 2 is the sequel to the original Killing Floor game that debuted on PC and started life as an Unreal Tournament mod. It is primarily a co-op multiplayer game that consists of multiple waves of progressively harder enemies. Trophies can be earned in part through solo play but it is recommended that you play online multiplayer early on to get a feel for the change in gameplay ready for the multiplayer trophies.

Lobbies hold up to 6 players per team and there are 10 unique Perk types to play as with a vast array of weapons to choose from. Tripwire regularly updates its Killing Floor titles with free maps and content so expect regular drops for a while to come!

Most of the collectibles videos are courtesy of Harry94_. Thanks for all your hard work!
 

 

Update: All known exploits have been patched out but due to the developer's penchant for fixing them almost instantly, I won't be including any. Also note that the 1.20 patch introduced a Prestige system for each class, thus you must make sure to get all the trophies before Prestiging. The reason for this, is because you don't want to be back at square 1 and have to struggle against the zombie hordes whilst going for any of the trophies.

General Tips:

Step 1: Collectibles + DLC Collectible trophies (DLC not required for the Platinum)

All the levels are standalone maps that can be chosen directly from the menu. In this step, you will get all the collectibles, you can do this alone in Solo Mode. This should give a good feel for the enemy types and the map layouts. To get through this step quickly, you will simply need to play the first wave on each level. Kill all enemies except 1 - leave a Bloat as your final Zed (because small Zeds will rage if they are the last enemy and run after you and Bloats are slow) and follow each of the videos to find and shoot 10 collectibles in each level.

During this step you will earn:

Step 2: Find the Perk that you're good with and stick with it until you get it to Level 25

During this step, you're going to find a perk that suits your play style. Stick with it to master it by using the weapons associated with that weapon whilst you play to level up quicker.

I highly recommend finding yourself a team during this step, with a range of Perks between you, see Hell on Earth for more information. Having a team with lots of different Perks who you can practice with will make the trophies for this game much easier. Co-operation is the name of the game!

Start - You can play on any difficulty at any time, though if you want to get good as well as level up, I highly recommend starting with Normal difficulty, especially if this is your first time playing Killing Floor. When you have reached level 10, you should be ready to step up the difficulty.

Level 10+ - Start playing on Hard difficulty. If you're not feeling confident in your skills or team at this point there is no harm in returning to Normal mode but please note that you will get nearly double the amount of XP by playing in Hard Mode. There is a huge difficulty spike between Normal and Hard. The Zed HP increases and the number of Zeds per wave is higher than on Normal. More Elite Zeds will spawn and you will also get less money at the end of a wave.

By all means, attempt Suicidal and Hell on Earth difficulties before you reach level 25 but be warned, they are not for the faint of heart and as you level up, your stats will improve to make things easier for you.

During this step you will earn:

Level Trophies:

Multiplayer co-op trophies:

Step 3: Complete the hardest difficulties

You should have all the level and difficulty trophies by the end of this step. You will probably have collected most of the Misc trophies by this point too but don’t fret if not.

If by this point you are feeling comfortable with Hard difficulty, then you're in luck. The rise in difficulty between Hard => Suicidal => Hell on Earth is a more gradual curve than Normal => Hard. The enemies are stronger, take less damage and become faster with each new difficulty. You will also find that you will get less weapon/ammo drops and earn less money from kills. You will need to make sure your team has allocated roles so that you don't waste ammo and money. Sharing money is the best way to get your team out alive. There is also a glitch available to make these trophies a breeze, see Hell on Earth for more information.

During this step you will earn:

Step 4: Misc trophies

You have done the hard part, now you should finish up by clearing the miscellaneous trophies. You will probably have collected most of them during Steps 2 and 3 but most can be acquired now by playing a solo game of 4 wave Survival. You will also need to play at least 2 matches of VS Survival if you haven't yet done so - once on the Zed team and once on the Human team.

During this step you will earn: