Use each weapon successfully.
Successfully use every melee attack move.
Free 50 prisoners in the Gift Shop.
Collect all the prisoners of one head shape.
Complete the first four finales in any mode.
Collect 10 Golden Hats.
Collect all the weapons in the Gift Shop by unlocking or trading.
Die enough times and we give you a prize.
Get 100 kills.
Kill your teammate 50 times.
Get an A++ in 10 levels.
Get eaten alive.
Find a secret level.
Free a fellow prisoner.
Get yourself a cool new weapon.
Make a trade with someone.
Complete the story's opening sequence in any mode.
Play with the Behemoth or someone with this achievement in an online game.
Get a letter grade in every level (except Encores) in Normal Solo Story Mode.
Get a letter grade in every level (except Encores) in Normal Co-op Story Mode.
Get a letter grade in every level (except Encores) in insane solo story mode.
Get a letter grade in every level (except Encores) in insane co-op story mode.
Complete all the Encores in any mode.
Get a letter grade in all eight finales in any mode.
Be on the winning team in 100 arena matches.
Be on the winning team in one arena match of every mode.
Free all the prisoners in the Gift Shop by unlocking or trading.
Trade online with ten different players.
Play and rate 10 user-created levels.
Download and host a game of user-created levels.
