To enable the following cheats, pause the game and hold down the L1 button, then input the code.

     Invincibility - Down, Up, Left, Left, Triangle, Up, Right, Down 
     All weapons - Square, Circle, Up, Down, X, Square 
     Unlock levels - Triangle, Up, X, Down 
     Debug info cheat - Down, Down, Triangle 
     Unlimited Lives - Triangle, Circle, X, Square 
     Full Health - Square, X, Triangle, Circle 
     Continue from last location after death - Square, Circle, X 


                                        Game Shark Codes

     All Weapons - 80018BD2 2400 or 80018BE4 03E8 or 80018BE6 2402 
     Infinite Ammo - 80022B46 2400 
     Infinite Health - 8005DF06 2400 
     Infinite Lives - 800FF874 0005 
     Infinite Smart Bombs - 8005D45E 2400