Extreme Assault Cheats

At the main menu type "oh_dear" to enable the cheat codes.
Then press in the game :
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alt + 1 - full ammo
alt + 2 - weapon upgrade
alt + 3 - energy up
alt + 4 - god mode
alt + 6 - end mission
alt + 7 - deactivate enemies
alt + 8 - change to heli mode
alt + 9 - change to tank mode