X-Men: Next Dimension 
  
Xbox

Master code:


At the main menu hold L and press Right, Right, Left, Left,
Down, Up, B at the main menu. 

Unlock Bastion:


Beat Story mode as Magneto
without losing.

Unlock Bishop:


Beat Arcade mode as Gambit.

Unlock Blob:


Beat Arcade mode as Bishop.

Unlock Psylocke:


Beat Arcade mode as Betsy.

Unlock Dark Phoenix:


Beat Arcade mode as Phoenix
or Story mode as Magneto.

Unlock Pyro:


Beat Arcade mode as Dark
Phoenix on every difficulty level. 

Unlock Sentinel A:


Beat Arcade mode as Cyclops.

Unlock Sentinel B:


Beat twenty consecutive opponents in Survival mode.

Extra costume 3:


Beat the game in Story mode to unlock
a character's third costume.

Extra costume 4: 


Beat twenty consecutive opponents in Survival mode.

Extra costume 5: 


Beat Arcade mode on hard.

Extra costume 6: 


Beat ten fighters in Time Attack mode in under fifteen minutes.

Extra costume 7: 


In Team mode, set up an 8 vs 8 fight, and beat the other team using two characters max. 

Extra costume 8: 


Beat forty consecutive opponents in Survival mode.







Thanks to Revolution readers james, The_clown_virus, and TobyMicquire!