Level skip:
. Note: For the stage number, entering "3" will start the bonus stage and "5" will start the Boss stage.

Unlimited lives:
Hold [Command] + [Shift] + [Ctrl] immediately after getting hit.

Cheat mode:
Press [Tab] to pause game play. Then, enter one of the following codes to activate the corresponding cheat function.

Full ammo	aaa
Full shields	sss
Heat seeking missile launcher	mmm
Additional vehicle	vvv

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