"Enter these where you enter the level codes:

UNLEADED    - Unlimited Fuel
GUNSRUS     - Unlimited Ammo
CHAINMAIL   - Unlimited Armor
EAGLEEYE    - Recon Mode 
OLDSCHOOL   - Top-Down View
SHARK BAIT  - Shockwave 
MAD BOMBER  - Shockwave, Unlimited ammo
CHEESYPOOF  - Unlimited Fuel, Ammo, and Armor"
