Unlock entire game - enter the following sequence at the mission select
screen:
LTHUMBSTICK BUTTON, BLACK, RTRIGGER, RTHUMBSTICK BUTTON, WHITE, LTRIGGER
Switch front-end music - enter the following sequence anywhere in the
front-end:
LTHUMBSTICK BUTTON, LTHUMBSTICK BUTTON, RTHUMBSTICK BUTTON, RTHUMBSTICK
BUTTON, LTRIGGER, RTRIGGER
Spoof Mission Briefing - enter the following at the armoury screen before
launching missions 1, 3, 6, 8, 9 & 14 only).
LTRIGGER, LTRIGGER, RTRIGGER, RTRIGGER, LTHUMBSTICK BUTTON, RTHUMBSTICK
BUTTON
Complete current mission - enter the following sequence at any time during
gameplay (not in the pause menu):
LTHUMBSTICK BUTTON, WHITE, WHITE, BACK, RTHUMBSTICK BUTTON, WHITE
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Cheat Mode
Go to the mission select screen. Once there, click down the Left analog, then press BLACK, R, click the Right analog, then press WHITE, then L. This will unlock everything in the game.
Flak Cannon
The Flak Cannon works well at close range. Fire it at the first group of landing craft then use your pistol for the tanks at long range.
Custom Soundtrack
Go to the options menu at the main screen. If you have already created your own soundtrack on the hard drive, you can listen to it during the missions.
Win Mission
To win the mission you're currently playing, click the Left analog, then press WHITE, WHITE, BACK, click the Right analog, WHITE.
Fake Mission Briefing
Before certain missions (1, 6, 8, 9, 14), press L, L, R, R, then click the Left Analog stick, then the Right Analog stick before launch. You'll hear some funny business as a result.