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