Unlockables - Syphon filter 2
Unlock Expert Mode:
Highlight the '1-Player' option at the Title screen and then hold Up + L1 + R2 + Select + Circle + Square and press X.
Unlock Stage Select:
Press Start and choose 'Options', highlight 'Select Mission' and press Left + L1 + R1 + Select + Square + X.
Unlock ALL Weapons and Infinite Ammo:
Press Start and highlight 'Weapons' and press Right + L2 + R2 + Square + Circle + X.
Added by: Sanzano Feb 8th 2007, ID#14390