All Weapons:
Start a mission, pause the game and press Square, Circle, R1, L1, R1+R2. This code must be re-entered on each level. 
Invincibility:
Start a mission, pause the game and press Square, Circle, L1, L1 + L2. This code must be re-entered on each level. 

Level Select:
At the Main Menu, press Square, Circle, R1, L1, R1+L1. 

Run faster in Multiplayer:


Hold Square + Triangle to chase your opponent more quickly. 




GameShark Codes
Infinite Health			800432a02400

Infinite Ammo			80057fd22400

Infinite Flamethrower 		80058e3e2400
Fuel