Bonus mission: Score over 4500 points in Missions 1 through 8.
Level skip:
Level 2 Hold R on controller two and press Start on
controller one at the title screen. McGlone Mine, Dino Park or
Whitney Appliances may now be selected.
Level 3 Hold L on controller two and press Start on
controller one at the title screen. Gemini Towers, Shylock Center,
or Paris Mine may now be selected.
Bonus mission Hold L + R on controller two and press Start
on controller one at the title screen. This mission is based on
the Deutschland Moldavia HQ level from the SNES game, The Peacekeepers.