Here is the full list of all 30 BattleBlock Theater achievements.
Be on the winning team in 100 arena matches.
Get a letter grade in every level (except Encores) in Normal Co-op Story Mode.
Get a letter grade in all eight finales in any mode.
Be on the winning team in one arena match of every mode.
Use each weapon successfully.
Collect 10 Golden Hats.
Get a letter grade in every level (except Encores) in Normal Solo Story Mode.
Successfully use every melee attack move.
Free all the prisoners in the Gift Shop by unlocking or trading.
Collect all the prisoners of one head shape.
Complete an encore level in Story Mode.
Complete 10 user-created levels in a single Featured Story playlist.
Get 100 kills.
Complete the first four finales in any mode.
Die enough times and we give you a prize.
Download and host a game of user-created levels.
Play with the Behemoth or someone with this achievement in an online game.
Free 50 prisoners in the Gift Shop.
Kill your teammate 50 times.
Collect all the weapons in the Gift Shop by unlocking or trading.
Get eaten alive.
Get an A++ in 10 levels.
Make a trade with someone.
Get yourself a cool new weapon.
Free a fellow prisoner.
Find a secret level.
Complete the story's opening sequence in any 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.