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