Extra Ammo:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press Down, Right, Circle, Left, Right, Circle. To refill your ammo, just pause & select the Ammo option that appears.

Healing:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press Right, Right, Left, Down, Down, Up, Triangle, Circle. To refill your health, just pause & select the Health option that appears.

Weapon Power-Up:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press Down, Right, Down, Right, Triangle. To power up, just pause & select the Power option that appears.

Extra Lives:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press Left, Down, Right, Triangle, Square, X, Circle.

Free Bombs:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press R1, R2, X, Triangle, Square, Circle, R1, R2, Circle, Circle, Square.

Level Skip:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press X, R1, Triangle, R1, Square, Circle, R2, R2, X, Square, Triangle, X.

Level Select:
Pause & hold L1 + L2 for 10 seconds, then, while holding them, press Up, Right, Down, Left, Triangle, Circle, X, Square, X, Triangle, Square, Circle.