The Invasion Add-on for Call of Duty: Ghosts (Xbox 360) has 10 achievements worth 250 gamerscore.
Kill 5 cryptids with the Ark attached to every compatible weapon in Awakening in Regular\Hardcore.
Complete all Challenges and escape Awakening in Regular or Hardcore difficulty.
Escape Awakening with each of the four classes in Regular or Hardcore difficulty.
Escape Awakening for the first time in Regular or Hardcore difficulty.
Escape Awakening using two Relics in Regular or Hardcore difficulty.
Find all of the Intel in Awakening.
Extend the bridge in Awakening in Regular or Hardcore difficulty.
Get past the first gate in Awakening in Regular or Hardcore difficulty.
Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.
Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.