SYPHON FILTER Hints/Cheats

All Weapons and Infinite Ammo 
Pause the game and highlight the Weapons
menu. Now press and hold RIGHT + L2 + R2 + CIRCLE + SQUARE + X. 

Level Select 
Pause the game, go into the Options menu.
Highlight the Select Mission option, then
press and hold LEFT + L1 + R1 + SELECT + SQUARE + X. 

Press Back to Exit SYPHON FILTER Hints/Cheats