Infinite
Points:
Go to a rock wall in a desert level. Shoot the rocks, and your points will go up with
every shot. If shooting in one area doesn't work, shoot an edge.
Level Skip:
Pause the game, hold L2, then press UP, DOWN, LEFT, RIGHT, Triangle, X, X, Triangle,
RIGHT, LEFT, DOWN, Up. Unpause the game while still holding L2.
Super Weapons:
While playing, quickly press UP, DOWN, LEFT, RIGHT, Triangle, X, Square.
Weapon Power-Up:
Pause the game, hold L2, then press UP, DOWN, LEFT, RIGHT, Triangle, X, Square. Unpause
the game while still holding L2.
Extra Characters:
At the Options screen, hold L1 + L2 + R1 + R2 and press Circle, X, Triangle, Circle,
Circle, X, Square.
