Aliens are swift and powerful. Their speed is unmatched. Coupled with their ability to crawl on walls and ceilings and leap great distances, it's no wonder they're feared. Aliens aren't durable, however. They wither under direct weapons fire. But, given their speed and stealth, it's awfully hard to hit them in the first place. When playing as an Alien, you must develop an assassin's mentality. You'll find yourself sneaking through air ducts, springing on unwary prey, and running circles around your foes to throw off their aim. Your claws and tail are powerful, but you can use them only, at close range: Alien combat is always up-close and personal.

Aliens, a.k.a. "Xenomorphs," are giant, insectoid life forms. They possess only rudimentary intelligence compared to that of humans and Predators, but their speed, physical ability, and sheer ferocity more than compensate for this. Aliens live in massive labyrinthine colonies. They're extremely aggressive, often invading other life forms' habitations, killing the occupants, and establishing colonies of their own. Of the three species fighting to control the stars, Aliens are arguably the most terrifying. Deadly-quick and surprisingly crafty, they're unpredictable and tend to attack in numbers. But they aren't invulnerable: as with the other two species Aliens' shortcomings effectively counterbalance their formidable strengths. To succeed, Aliens must capitalize on thir speed and ferocious close-combat attacks. The Alien can be either overwhelmingly dangerous or thoroughly ineffective, depending on the skill of the player controlling it.