Unlockables cheats for Syphon filter 2

Unlockables

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.

More tricks, tips and cheats for this game are right here - Syphon filter 2 cheats