Press [Esc] to display the main menu. Then, enter one of the following codes to activate the corresponding cheat function. A sound will confirm correct code entry. Press [Esc] again to resume game play.
Code - Effect:
ahcrp - Power and shields
ahcre - New item for hypercycle
ahcrw - 500 photon, neutron and darts
ahcro - Gateways immediately open
ahcrg - <01-30> Level select