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