As was the case previously with Call of Duty: Ghosts’ Onslaught DLC, hidden on all four of the new Devastation multiplayer maps are Alien eggs tucked away in four hard-to-spot locations. Shooting all four will grant you a bit of bonus XP (in a PUBLIC multiplayer match) , but going the “egg-stra” step and destroying an Alien Hive in Devastation’s Mayday Extinction map afterward will score you an additional Achievement.

在第二部DLC - DEVASTATION 的4張多人模式新地圖裡各藏了異形卵，玩家只要射擊全部４個異形卵（必須是公開伺服器）就能獲得２０００經驗值，接著在 DEVASTATION 的新滅絕模式地圖 - MayDay 完成一次 Hive 就能獲得１００００經驗值並獲得成就 - Egg-stra Devastation!。

本篇攻略將會以影片及擷圖的方式提供異形卵詳細位置，祝各為順利取得成就。