Use the following combinations at the character selection screen where you save the game or choose characters:
All characters: Right, Left, Left, Right, Up, Up, Up, Esc
God mode: Down, Up, Down, Up, Right, Down, Right, Left, Esc
Level 99 characters: Up, Down, Up, Down, Left, Up, Left, Right, Esc
+1 point to all skills: Left, Right, Left, Right, Down, Up, Esc
These combinations must be entered during the gameplay:
Fast characters: Up, Up, Up, Down, Up, Down, Esc
Extra melee damage: Left, Left, Right, Left, Right, Up, Esc
Unlimited Xtreme tokens: Left, Down, Right, Down, Up, Up, Down, Up, Esc
Use these codes at the review menu:
Game cinematics: Left, Right, Right, Left, Down, Down, Left, Esc
All comics: Right, Left, Left, Right, Up, Up, Right, Esc
To get all Danger Room courses, press Right, Right, Left, Left, Up, Down, Up, Down, Esc at the Danger Room course menu.