Unlockables
Unlock Hard Mode:
At the New Game title screen press Left + L1 + R2 + Select + Square + Circle + X.
Unlock ALL Weapons + Infinite Ammo:
During gameplay press 'Start' to pause the game then highlight Weapons and press Right + L2 + R2 + Square + Circle + X.
Unlock One-Shot Kill:
During gameplay press 'Start' to pause the game then highlight Silenced 9mm and press Left + Select + Square + X + L1 + R2.
Unlock Super Ammunition:
During gameplay press 'Start' to pause the game then highlight the map menu and press Right, R1, R2, X.
Unlock Weak Enemies:
During gameplay press 'Start' to pause the game then highlight Map and press Right + L1 + R1 + X.
Unlock Stage Select:
During gameplay press 'Start' to pause the game then choose Options. Highlight 'Select Mission' and press Left + L1 + R1 + Select + Square + X.
More tricks, tips and cheats for this game are right here - Syphon Filter cheats
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