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