Using authentic environments inspired by the film series including Hadley?s Hope, the Sulaco and LV-426, you will be immersed in an eerie, atmospheric world where any moment could bring your death. * The masters of co-op bring their expertise to the Aliens universe. Xenos getting too tough ? Call up your buddies so they can drop in with extra firepower. * The whole campaign can be played with a squad of up to four players, dropping in and out as necessary through self-contained missions within an over-arching narrative. * Create your perfect killing machine. An extensive upgrade system allows players to customize their characters to play the way they want. Earn experience to get perks, new weapons and new looks for your squad.