No Looking Back
Not unlocked yetBeat the game in Ironman mode on Classic or Impossible Difficulty.
Meet New People. Then Kill Them.
Not unlocked yetWin a multiplayer match.
Shooting Stars
Not unlocked yetShoot down 40 UFOs.
Ain't No Cavalry Comin'
Not unlocked yetHave a soldier survive every mission in a full game.
As A Scalpel
Not unlocked yetEarn the "Excellent" rating in every performance category on a terror mission.
Edison
Not unlocked yetIn a single game, complete every Research Project.
Angel of Death
Not unlocked yetKill an alien while flying. Single player only.
All Employees Must Wash Hands…
Not unlocked yetIn a single game, complete every Autopsy.
Beyond the Veil
Not unlocked yetFind a soldier with the Gift.
Prisoner of War
Not unlocked yetCapture a live alien.
The Gatekeeper
Not unlocked yetStun an Outsider.
X Marks the Spot
Not unlocked yetUncover the alien base's location.
Xavier
Not unlocked yetMind Control an Ethereal. Single player only.
See All, Know All
Not unlocked yetBuild the Hyperwave Relay.
On the Shoulders of Giants
Not unlocked yetBuild the Gollop Chamber.
Ride the Lightning
Not unlocked yetBuild a Firestorm.
Eye in the Sky
Not unlocked yetLaunch a Satellite.
All Together Now
Not unlocked yetGet satellite coverage over every country on one continent.
Hunter/Killer
Not unlocked yetIn a single game, shoot down one of each alien craft.
Man No More
Not unlocked yetBuild a suit of powered armor.
Bubonic
Not unlocked yetPlay a multiplayer match against someone with this achievement.
We Happy Few
Not unlocked yetComplete a mission without losing a soldier.
The Hardest Road
Not unlocked yetAdvance one of your soldiers to Colonel rank.
Humanity's Savior
Not unlocked yetBeat the game on any difficulty.