Death Jr. 2: Root of Evil - All Weapon Upgrades

Invincibility:
Hold L and press Up, Up, Down, Down, Left, Left, Right, Right, Square, Triangle.

Refill Ammunition:
Hold L and press Triangle, Triangle, X, X, Square, Circle, Square Circle, Down, Right.

Unlimited Ammunition:
"Hold L and press Triangle, Triangle, X, X, Square, Circle, Square Circle, Right, Down.