Team up and take down the terror together: Play the full campaign in online co-op or single player, Easy drop-in and drop-out play Head Planet side and Experience a Hostile New Environment: Discover underworld cities and accept side missions, Explore the frozen terrain and search abandoned encampments Uncover the Past and Embark on a Thrilling Expedition to Save Mankind: Discover the source of the Necromorph terror and fight to fend off the extinction of the human race New Cover System: Enjoy a new cover system that allows you to utilize any tagged item A Whole New Planet: Discover a world of mysteries hidden on the frozen planet, Tau Volantis