We Happy Few
Complete a mission without losing a soldier.
What Wonders Await
Complete a Research Project.
Build an item.
And So It Begins…
Complete the tutorial mission.
Eye in the Sky
Launch a Satellite.
Shoot down a UFO.
Up and Running
Build a base facility.
Happy to Oblige
Fulfill a Council request.
Build a Workshop.
Kill 150 aliens.
The Hardest Road
Advance one of your soldiers to Colonel rank.
Build a Laboratory.
All Together Now
Get satellite coverage over every country on one continent.
As A Scalpel
Earn the "Excellent" rating in every performance category on a terror mission.
Man No More
Build a suit of powered armor.
Worth Every Penny
Acquire 1000 credits in one month.
Drums in the Deep
Gain access to the lowest level in your base.
And Hell's Coming With Me
All Employees Must Wash Hands…
In a single game, complete every Autopsy.
You Have 5 Seconds to Comply
Build a S.H.I.V.
Kill 500 aliens.
On the Shoulders of Giants
Kill 50 aliens with explosive weapons.
One Gun at a Time
Staff the Engineering Department with 80 engineers.
Beat the game on any difficulty.
Staff the Research Labs with 80 scientists.
Taking A Load Off
Stop a squad member from suffocating in single player
Flight of the Valkyries
Win a mission with an all-female squad. Single player only.
Who Needs Limbs?
Augment a soldier in single player
A Little Bit Alien
Modify a soldier in single player
Angel of Death
Kill an alien while flying. Single player only.
Beat a new special mission without losing any assets
Eradicate the infestation
Eliminate an enemy's shield and kill it on the same turn in single player
The Bigger They Are
Kill an elite enemy Sniper with one of your own snipers in single player
In a single game, shoot down one of each alien craft.
They Shall Not Pass
Eliminate all alien waves
All Hands on Deck
Get at least 4 kills with XCOM Base Security personnel
Deploy three tactical subsystems on a single soldier in single player
Kill an elite enemy Medic with explosive damage in single player
Deal with the newest global threat
Ours are the Furies
In a single game, complete every Foundry project.
Pain in the Neck
Cause an enemy to suicide
Where in the World
Make certain of the new threat's location
Mind the Step
Jump two stories in one move in single player
Get a Soldier to have 5 modifications in single player
Use Collateral Damage to blow up a car in single player
Remington… Max Remington
Have your special-duty soldier kill three enemies in the same mission
Someone Your Own Size
Kill a Muton Berserker in melee combat in single player
The Meld Squad
Field a fully enhanced squad and win the mission
Meet New People. Then Kill Them.
Win a multiplayer match.
Proc Combat Rush on the entire squad (min. 4)
Play a multiplayer match against someone with this achievement.
In a single game, complete every Research Project.
Shoot down 40 UFOs.
Mind Control an Ethereal. Single player only.
Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
Beat the game on Classic difficulty.
Kill an unseen enemy detected by a specially modified soldier in single player
Kill an enemy as it is psionically attacking you in single player
Field a squad where all members have at least two modifications (min. 4) and win the mission
Rise of the Machines
Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission
No Looking Back
Beat the game in Ironman mode on Classic or Impossible Difficulty.
Ain't No Cavalry Comin'
Have a soldier survive every mission in a full game.
Guardian of Earth
Designate a highly decorated soldier as the Volunteer
By Our Powers Combined
Field a squad with 4 augmented soldiers, each with a different base ability and win the mission
Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
Our Finest Hour
Beat the game on Impossible difficulty.
An Army Of Four
Beat the game without buying a Squad Size upgrade (Classic+ difficulty)
A Continental Fellow
Win the game from each of the 5 starting locations.