Extreme Assault

At the main menu type 'oh dear' and the use these codes in the game

CHEATDescription
ALT+1Full ammo
ALT+2Upgrade current weapon
ALT+3Full energy
ALT+4Indestructable
ALT+5Wow mode
ALT+6Complete mission
ALT+7Deactivate enemies
ALT+8Heli mode
ALT+9Tank mode
ALT+0Enhance speed