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Equipped with hi-tech armor and up to eight state-of-the-art weapons, you are a commando in the Gunvalkyrie agency. A scientist has harnessed a powerful extraterrestrial energy coming from Halley's Comet, but his experiments have spun out of control and threaten to either evolve humanity -- or destroy it. Now the scientist has disappeared, and it's up to you to find him. Fight terrible creatures in 10 levels of ascending action and intensity. Take advantage of the dual analog stick controls, running, turning, and fighting at once, jumping in and out of cover, and attacking with devastating special attacks. Eerie, complex lighting effects add to the game's atmosphere and depth.