Here is a listing of the Achievements in the game. Note that there are four "secret achievements", bringing the total to 30.
Cast Member[]
Complete the story’s opening sequence in any mode. 5 Gamerscore
Seasoned Performer[]
Complete the first four finales in any mode. 10 Gamerscore
Virtuoso[]
Get an A++ in 10 levels. 15 Gamerscore
Solo Star[]
Get a letter grade in every level (except Encores) in Normal Solo Story Mode. 20 Gamerscore
Co-op Star[]
Get a letter grade in every level (except Encores) in Normal Co-op Story Mode. 20 Gamerscore
Insane Solo Star[]
Get a letter grade in every level (except Encores) in insane solo story mode. 30 Gamerscore
Insane Co-op Star[]
Get a letter grade in every level (except Encores) in insane co-op story mode. 30 Gamerscore
Crowd Pleaser[]
Complete all the Encores in any mode. 15 Gamerscore
Secret Hat Hunter[]
Collect 10 Golden Hats. 10 Gamerscore
Hats Off[]
Get a letter grade in all eight finales in any mode. 20 Gamerscore
The Professional[]
Be on the winning team in 100 arena matches. 15 Gamerscore
All Around Joe[]
Be on the winning team in one arena match of every mode. 15 Gamerscore
Nailfile Cake[]
Free a fellow prisoner. 5 Gamerscore
Black Marketeer[]
Get yourself a cool new weapon. 5 Gamerscore
Jail Breaker[]
Free 50 prisoners in the Gift Shop. 10 Gamerscore
Social Butterfly[]
Collect all the prisoners of one head shape. 15 Gamerscore
Freedom Hero[]
Free all the prisoners in the Gift Shop by unlocking or trading. 30 Gamerscore
Armed and Dangerous[]
Collect all the weapons in the Gift Shop by unlocking or trading. 10 Gamerscore
First Time Trader[]
Make a trade with someone. 5 Gamerscore
Global Trader[]
Trade online with ten different players. 10 Gamerscore
Deadly Performer[]
Chicken Toucher[]
Play with the Behemoth or someone with this achievement in an online game. 10 Gamerscore
Melee Master[]
Successfully use every melee attack move. 15 Gamerscore
Weapons Master[]
Use each weapon successfully. 15 Gamerscore
Theater Critic[]
Play and rate 10 user-created levels. 10 Gamerscore
Theater Manager[]
Download and host a game of user-created levels. 10 Gamerscore
Secret Achievement[]
Continue playing to unlock this secret achievement. (Four total)