All gun upgrades for all characters
     Hold  L1  and  R1  and press Square, Triangle, Square, X, Square,
Circle, Square, Square

All toy monkeys and art gallery images
     Hold  L1  and  R1  and  press Triangle, Circle, Triangle, Circle,
Square, Square, Square, X

Full Health
     Hold L1 and R1 and press X, X, X, Triangle

Full Secondary Ammunition
     Hold L1 and R1 and press Triangle, Triangle, X, X       


Unlock Hard Difficulty

Unlockable:              How to Unlock:

Hard Difficulty          Complete the game