All Weapons
Pause the game then hold L1 and press
Square, Circle, Up, Down, X, Square.
Submitted by David Richter

Checkpoint Select
Pause the game. Hold L1 and press
Square, Circle, X. Release L1 and a new
option will appear. That option will allow
you to warp to any check point in the stage.

Submitted by Phil

Debug Mode/Statistics Report
To check the last checkpoint's name you
cleared Pause and hold L1. Then press
Down, Down, Triangle. A little bow will
appear in the lower left-hand corner.
Submitted by Phil

Full Health
Pause the game and hold L1 while pressing
Square, X, Triangle, O.
Submitted by E
(rvwood@Eriecoast.com)

Infinite Lives
Pause the game then hold L1 and press
Triangle, Circle, X, Square.
Submitted by Dmitri Mada

Invincibility
Pauase the game then hold L1 and press
Down, Up, Left, Left, Triangle, Up, Right,
Down.
Submitted by Robby Mair

Level Select
Pause the game then hold L1 and press
Triangle, Up, X, Down.
Submitted by Dmitri Mada