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