Cheats:
R Trigger, White, L Trigger, Black, Down, Up, Left, Up - Fully Equipped (Weapons). 
Down, Down, B, Up, X, Y, X, White, Up, Up, L, Y - GOD MODE! 
R Trigger, R Trigger, Y, B, X, Black, L Trigger, Down - Hellium Hunters (Enemies have high pitch voices). 
X, X, X, Down, X, Down, B, Up - Invisibility. 
X, X, White, Down, Y, X, B, Down - Monkey Skin. 
Up, Down, Left, Left, R Trigger, White, L Trigger, L Trigger - Piggy Skin. 
Left, R Trigger, R Trigger, Y, R Trigger, R Trigger, X, L Trigger - Rabbit Skin. 
White, Right, B, White, Black, Down, B, Left - Regenerate (Health refills over time). 
White, White, L Trigger, White, Left, Right, Left, Right - Runner (Infinite run meter). 
R Trigger, L Trigger, White, L Trigger, Right, Left, Left, Left - Silence (Enemies can't hear you). 
L Trigger, Y, Y, Y, B, B, B, R Trigger - Super Punch (Killer Punches).

Bonus Feature Cheats:
Enter these cheats at the title screen. NOTE: To unlock all of these "Bonus Feature" cheats you must earn a five-star rating (Hardcore Mode Only) in each pair of two consecutive scenes:

Black, Down, B, Left - Bin Bag 
X, Black, L Trigger, Down - Camheads 
R Trigger, R Trigger, X, L Trigger - Cerberus Variant Designs 
Left, Right, Left, Right - Clown Head Variations 
B, B, B, R Trigger - Early Innocent Hoodie Designs 
Up, Down, Right, Right - Headshots 
R Trigger, White, L Trigger, L Trigger - Headshots 2 
X, X, White, Down - Level Art 
Y, X, B, Down - Piggsy 
X, X, X, Down - Piggy & Cash Toy Mock-Ups 
R Trigger, L Trigger, White, L Trigger - Scarecrow 
Right, Left, Left, Left, - Scarecrow Halloween Head Variation 
Left, R Trigger, R Trigger, Y - Smileys 
X, Down, B, Up - Starkweather 
White, White, L Trigger, White - The Clowns 
R Trigger, R Trigger, Y, B - The Jury 
White, Right, B, White - The Lost 
L Trigger, Y, Y, Y - Tramp 
R Trigger, White, L Trigger, Black - Wardogs 
Down, Up, Left, Up - Wardogs Zoo Sniper.