Cybernator
Bad Endiing:
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Go through the first level, and do not destroy the Boss. Finish the rest
of the game to see the failed ending.
Extra Continues:
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At the title screen, hold Up+L+R and then press start.
Napalm Gun:
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To get the Napalm Gun, all you have to do is complete the first level
WITHOUT SHOOTING ANYTHING EXECPT THE BOSS OF THE LEVEL. However, you DO
have to complete one more task before it stays with you for the whole
game: you MUST complete level 2 WITHOUT DYING. If you can complete level 2
without dying, the congratulate yourself on a job well done; you now have
the most powerful weapon in the game.