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