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