God mode:
Quickly press Up, Down, Left, Right, Up, Down, Left, Right during game play.
All weapons:
Quickly press Up, Down, Left, Right, A, B during game play.
Level select:
Quickly press X, Up, Right, Up, Right during game play.
Invisibility:
Quickly press X, B, A, B during game play.
Kill all spawned enemies:
Quickly press A, B, Y, X, A, B, Y, X during game play.
Kung Fu fists:
Quickly press Right, Down, Left, A during game play.
Minigun:
Quickly press Up, Up, Down, Down, A, B, A, B during game play.
No knock downs:
Quickly press Up, A, Up, B, Y, Up, X during game play.
