Cheat Enabled	To Enable Cheat, Pause And Press L1+L2 For 10 Seconds, And Press:
1-Ups	<, Down, >, Triangle, Square, X, Circle.
Extra Ammo	Down, >, Circle, <, >, Circle.  Pause and select Ammo to refill ammo.
Extra Bombs	R1, R2, X, Triangle, Square, Circle, R1, R2, Circle, Circle, Square.
Invincibility	Square, Down, Down, Square, Down, Down, Circle. (Thanks to DANMONEY@webtv.net)
Level Select	Up, >, Down, <, Triangle, Circle, X, Square, X, Triangle, Square, Circle.
Level Skip	X, R1, Triangle, R1, Square, Circle, R2, R2, X, Square, Triangle, X
Refill Health	>, >, <, Down, Up, Triangle, Circle.  Pause and select Health to refill health.
Weapon Power Up	Down, >, Down, >, Triangle.  Pause and select Power at any time during gameplay after that.