Aliens vs. Predator: Requiem (Sony PSP)
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Spine Buster
Play as a Predator. When an alien runs at you, press X when indicated. Note: This may not work every time.
Weapons
Complete the indicated level to unlock the corresponding weapon.
Hand Cannon: Exterior Hospital
Shuriken: Cemetery (Route 3: Suburban)
Spear: The Crash Site (Route 1: Underground)
Throwing Disc: Forest (Route 2: Industrial)