The Rise of the Ghosts Add-on for RAGE 2 has 10 achievements worth 195 gamerscore.
Activated all Air Drops in Overgrown City
Visited the Overgrown City EcoPod
Completed all Ghost Sanctuaries in Overgrown City
Completed mission: Means to an End
Completed mission: Slaughter to the Lamb
Completed the Recondite Ark location
Completed the Reclaim & Rebuild Project
Completed mission: Within the Walls
Completed the Bendring Ark location
Completed mission: Captive