Loaded cheats and cheat codes for Playstation

God mode
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press
Square, Down, Down, Square, Down, Down, Circle.

Restore health
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press
Right, Right, Left, Down, Down, Up, Triangle, Circle to unlock the 
"Health" option. Select it to refill the life bar. 

Select any stage
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press Up,
Right, Down, Left, Triangle, Circle, X, Square, X, Triangle, Square,
Circle. 

Stage skip
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press X,
R1, Triangle, R1, Square, Circle, R2, R2, X, Square, Triangle, X.

Bonus lives
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press Left,
Down, Right, Triangle, Square, X, Circle.

Additional smart bombs
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press R1,
R2, X, Triangle, Square, Circle, R1, R2, Circle, Circle, Square.

Unlimited ammunition
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press Down,
Right, Circle, Left, Right, Circle to unlock the "Ammo" option.
Select it to increase your ammo up to a 32000 round limit.

Maximum firepower
During the game play, push Start to bring up the options menu. Then,
hold L1 + L2 for at least 10 seconds. Keep L1 + L2 held and press Down,
Right, Down, Right, Triangle to unlock the "Power" option.
Select it to set your weapon's firepower to maximum. 

Walking corpse
Activate the "Restore health" cheat code to unlock the "Health" option.
Then, pause the game play immediately after dying, and before regenerating. 
Select the "Health" option to restore your life. Your character can now 
move around as a splattered corpse and invulnerable to enemies.
Submitted by Mastah