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