Pause the game, then hold L1 and press Square, Circle, Triangle, X, Square, Circle, Triangle, X. Note: This code can only be enabled in levels that you are escorting NPCs. -From: HARDCOREHAGZ@aol.com and hellscream3@shaw.ca
Game Shark Codes
Master Code (Must Be On) 0E3C7DF2 1853E59EEE8EFE7A BCBB409A
Invulnerability CEB631B8 BCA99C84
Infinite Health CEB63198 BCA99C84
Infinite Ammo CEB63148 BCA99C84
Always Rage CEB631A8 BCA99C84
All Missions CEB63158 BCA99C84
All Weapons CEB63168 BCA99C84
Unlock Daywalker CEB63178 BCA99C84
30,000 Points CE693992 BCA910B3