God mode
During game play, press L2, R1, X, Down. ( Alternately, press L2 + R1 +
X + Down during game play)
Unlock every level and weapon
At the main menu, highlight Credits and press L2, R2, Square, Circle.
(Alternately, highlight the "Credits" option at the main menu, then press L2,
R2, Square, Circle. )
Shooting difficult to hit far away enemies:
Look at the enemy through binoculars. Center the enemy in your binocular
sights, then switch back to your rifle. The rifle will now be trained on the
enemy. Fire a three round burst and you will usually take him out.
Level select
Highlight the "Options" menu, then hold L1 + R1 + L2 + R2. Alternately,
highlight the "Credits" option at the main menu, then press L2, R2, Square,
Circle
Sniper rifle:
Always use a snipers rifle. This seems to work the best, because you can
stay low and pick your targets. If it gets too hot, send your team. If you tell
them to spread out, it works better than an attack.
