Enter the following code during gameplay to call up the code screen: Hold L1 and R1, and insert Square, Circle, Triangle, X, X. Then, for full health restoration, insert this code: Hold L1 and R1, and insert Triangle, Square, Square, Triangle, X, Circle.
Enter the following code during gameplay to call up the code screen: Hold L1 and R1, and insert Square, Circle, Triangle, X, X. Then, for infinite ammunition, insert this code: Hold L1 and R1, and insert Circle, Circle, Triangle, Square, X, Triangle.