Cool Gun

On the Crimea mission, after picking up Nick, fly back to the base were you started the mission (not the LZ's), go to the entrance so that you are above the gate and looking into the base, then rotate left so that you are still above the gate but with the base on your right, now fly straight ahead so that you are about 3-4 helicopter lenghts away from the base. There should be a small shack with a helipad, land and Nick will get out and go in, its a toilet. He will eventually come out, pick him up and the toilet will blow up. There will be a new more powerfull gun that fires instead of the rockets.

Dracula Cameo

On the fourth campaign (Dracula Strike), if you fly to the bottom center of the map you will find a large mansion. Blow it up to reveal Count Dracula himself.

Passwords

Level      Password
Black Sea  KRAZHA
Caspian    VERBLUD
Dracula    YADRO
Kremlin    PERIWOROT

Unlimited Ammo and Fuel

Enter the password ADRENALINE for unlimited ammunition. To replenish your fuel, hold button B when your fuel gauge drops to 10. Continue to hold B until your fuel drops all the way to 0 and resets itself to 100.

Santa Cameo

In the first level there is a Santa Claus waiting for you in the bottom right-hand corner. Go to it and blow it up. A life will show up. Don't blow up the life!

Cheat Codes

Enter these codes at the password screen.

Password      Effect
ALBATROSS     1/2 fuel consumption
FREEBIE       1 extra life
VOODOO        4 extra lives
GABRIEL       More powerful weapons
COLDPIZZA     Unlimited fuel
ADRENALINE    Unlimited Ammo and Fuel