The Xenomorph is the primary antagonist and the ultimate hunter. It is unkillable by conventional means and learns your patterns. Its 'build' is one of relentless pursuit, acute senses (especially hearing), and unpredictable behavior. It patrols vents, stalks corridors, and will investigate any sound. Understanding its AI is key to survival. It can be temporarily deterred by fire (Flamethrower) or loud noises, but never truly defeated until the very end. Treat it as an environmental hazard that is always present and always a threat.
