Dark Destroyer Cheat Codes
To activate the cheat codes menu, press x. A prompt will appear asking you for a cheat code.
You can enter any of the following:
"activate autopilot" - activates the autopilot
"deactivate autopilot" - deactivates the autopilot
"stop ya all" - enemy ships will never land
"move ya all" - enemy ships will land again
"take me forward" - go to the next level
"blast em all " - gives you 100 extra bombs
Thanks to Arjan!