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