Invincibility:
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While playing the game, hold L1 and press X, R1, Triangle, R1, Square,
L2. If you entered the code correctly, you will hear a sound.
One shot kills:
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While playing the game, hold L1 and press Triangle, X, Triangle, Square,
L2, Circle. If you entered the code correctly, you will hear a sound.
Draw enemy health:
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While playing the game, hold L1 and press Square, Circle, X, L2, R1,
Triangle. If you entered the code correctly, you will hear a sound.