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