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