Full ammunition:
Press Start to pause game play and press Triangle. Highlight the "Help Text" selection, hold L1 + R2, then press X + Triangle. A sound will confirm correct code entry. Select the "Return To Game" option to resume with full ammunition.
Full health and armor:
Press Start to pause game play and press Triangle. Highlight the "Help Text" selection, hold L1 + R2, then press X + Circle. A sound will confirm correct code entry. Select the "Return To Game" option to resume with more health and armor.