While you are at the cheat screen, press R2, X, L1, Square, R1, Circle, L2.

Big Head Mode

While you are at the cheat screen, press Square, Square, X, Circle, Circle, X, Square.

Big Head (Enemies)

While you are at the cheat screen, press X, X, R1, X, L1, X.

Twice the Damage

While you are at the cheat screen, press Square, Square, Square, Circle, Circle, Circle, X.

See Ending FMV

While you are at the cheat screen, press Circle, R2, L1, Square, L2, X, R2.

First Person View

While you are at the cheat screen, press L2, R1, L1, R2, Circle, X, Square.

Infinite Ammo

While you are at the cheat screen, press L2, Circle, R2, Square, Circle, L2, R1

High Ego

While you are at the cheat screen, press R1, R1, Circle, Circle, L1, L1, R2.

Full Armor

While you are at the cheat screen, press L1, L1, R1, R1, X, X, Circle, Circle.

Invincibility

While you are at the cheat screen, press L1, Square, Circle, Circle, Square, L1, L2.

Invisibility

While you are at the cheat screen, press Square, X, Circle, Square, X, Circle, Square.

Unlock All Cheats

While you are at the cheat screen, press L1, L2, R2, R1, L1, L2, R2, R1, L1, L2, R2, R1, L1, L2, R2, R1, Circle, Circle, Circle, Circle, X, X, X, X, Square, Square, Square, Square, Select, Select, Select, Select, Select.