Secret achievement “Exo Survivor” shows bonus Exo-Survival Wave with zombies A secret achievement for Call of Duty: Advanced Warfare has been revealed on many sites today. The achievement is called Exo Survivor, and states that “Successfully complete the Exo Survival Bonus Wave” with an image of zombies. Now, it is important to note that this is part of the Exo-Survival co-op mode, not a different mode. SOURCE: ExoPhase
