Call of Duty: Advanced Warfare debuted last November and was instantly hailed as a classic by both fans and critics alike, easily taking the top spot of games sold in the US in 2014. Earlier this year, Activision and Sledgehammer Games introduced the "Havoc" downloadable content pack, which included the exciting Exo Zombies mode. In it, players were able to face off against massive armies of the undead, who happen to be wearing exo-suits. The recently released second DLC, "Ascendance" comes packed with the next chapter of the zombie storyline, featuring an expanded map, terrifying new enemies and four new multiplayer modes. Exo Zombies Infection, which sees the return of John Malkovich, Bill Paxton, Rose McGowan and Jon Bernthal, is available now with the Ascendance DLC. Take a look at the trailer below.