All Weapons/Ammo:
Enter the Password Left, Circle, Right, Square, Down, Triangle, Down, X
Level Select Codes:
Level 2 - Left, Left, Up, Triangle, Triangle, X, Square, Circle Level 3 - Down, Down, Square, Triangle, Down, Triangle, Down, Triangle Level 4 - Circle, Circle, Circle, X, X, Down, X, Circle Level 5 - Right, Right, Triangle, Square, Triangle, Left, Right, Triangle Level 6 - Up, Down, Triangle, Square, X, Circle, Left, Left Level 7 - Triangle, Square, Left, Left, Right, Up, Down, Circle Level 8 - Triangle, Triangle, Square, Circle, Up, Up, Square, Circle Level 9 - Left, Left, Right, Up, Up, Square, Square, Circle Level 10- X, X, Left, X, Square, Square, Triangle, X Level 11- Square, Triangle, Triangle, Square, Up, Up, Right, Up Level 12- Down, Down, Right, Square, X, X, Square, X
GameShark Codes
All weapons and ammo
801907f60063
801907f80063 801907fa0063
801907fc0063 801907fe0063
Thanks to Revolution readers Tyler Leepart, Corey Tice and Doug!