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.
Be on the winning team in 100 arena matches.
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.
Collect 10 Golden Hats.
Use each weapon successfully.
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.
Complete the first four finales in any mode.
Get an A++ in 10 levels.
Be on the winning team in one arena match of every mode.
Free 50 prisoners in the Gift Shop.
Collect all the weapons in the Gift Shop by unlocking or trading.
Die enough times and we give you a prize.
Successfully use every melee attack move.
Kill your teammate 50 times.
Play with the Behemoth or someone with this achievement in an online game.
Get 100 kills.
Download and host a game of user-created levels.
Make a trade with someone.
Get eaten alive.
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 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.
Free all the prisoners in the Gift Shop by unlocking or trading.