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