Aliens Extermination

Years after Alien3, two Colonial Marine squadrons are sent back to the destroyed Hadley's Hope on LV-426 to exterminate the Alien presence. Upon arrival at the colony, the Marines encounter not only the Aliens, but also a malfunctioning defense system. They eventually manage to destroy the system's power generators and shut the system down. The Marines continue their mission, fighting their way through the Aliens, and, eventually, are confronted by Weyland-Yutani synthetics that have been reprog...