Unlock All Cheats
     At  the  cheat  screen,  enter: Square, Circle, Triangle, Circle,
Square, X, Triangle, X.

Bizarre Deaths
     Enter  this  code  at  the  Cheats  screen:  Triangle,  Triangle,
Triangle, Triangle, Triangle, Triangle, Triangle, Triangle.

Bouncy Grenades
     Enter  this  code  at  the  Cheat screen: Circle, Circle, Circle,
Circle, Circle, Circle, Circle, Circle.

Enable Rain of Fire
     Enter  this  code  at  the Cheats screen: Square, Square, Square,
Square, Square, Square, Square, Square.

Gibby Bullets
     Enter  this  code  at  the  Cheat screen: Circle, Circle, Circle,
Circle, Triangle, X, Circle, Circle.

Gibby Explosions
     Enter this code at the Cheat screen: Triangle, Circle, X, Square,
Triangle, Circle, X, Square.

Super Health
     Enter  this  code  at  the Cheats screen: X, X, Square, Triangle,
Square, Triangle, Circle.

The Walking Dead
     Enter this code at the Cheats screen: X, X, X, X, X, X, X, X.

Unlimited Ammo
     Enter this code at the Cheat screen: Square, Triangle, X, Circle,
Square, Circle, X, Triangle.

Unlimited Grenades
     Enter  this  code at the Cheat screen: Circle, X, Circle, Square,
X, Circle, X, Circle.

Unlock Director's Cut
     Enter  this  code  at  the  Cheats  screen:  Square,  X,  Circle,
Triangle, Circle, X, Square, Triangle.

Unlock Level Select
     Enter  this  code  at  the  Cheats  screen:  Circle,  Square,  X,
Triangle, Square, Circle, X, X.

Unlock Rapid Rails
     Enter  this  code  at  the  Cheat screen: Circle, Square, Circle,
Square, X, X, Triangle, Triangle.