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