These are the same cheats as for XBOX (BLACK is Z, WHITE is W)
BOUNCY GRENADES: Z, Z, Z, Z, Z, Z, Z, Z
EXPLOSIVE PERSONALITY: X
GIBBY BULLETS: Z, Z, Z, Z, W, X, Z, Z
GIBBY EXPLOSIONS: W, Z, X, Y, W, Z, X, Y
RAIN OF FIRE: Y, Y, Y, Y, Y, Y, Y, Y
SUPER HEALTH: X, X, Y, W, Y, W, Z
THE DEAD WALK!: X, X, X, X, X, X, X, X
UNLIMITED AMMO: Y, W, X, Z, Y, Z, X, W
UNLIMITED GRENADES: Z, X, Z, Y, X, Z, X, Z
UNLOCK ALL CHEATS: Y, Z, W, Z, Y, X, W, X
UNLOCK DIRECTOR'S CUT: Y, X, Z, W, Z, X, Y, W
UNLOCK RAPID RAILS: Z, Y, Z, Y, X, X, W, W
UNLOCK LEVEL SELECT: Z, Y, X, W, Y, Z, X, X
WACKY DEATHS: W, W, W, W, W, W, W, W