Beat the game on any difficulty.
Kill an enemy as it is psionically attacking you in single player
In a single game, complete every Autopsy.
Use Collateral Damage to blow up a car in single player
Shoot down 40 UFOs.
Complete Furies
Earn the "Excellent" rating in every performance category on a terror mission.
Eliminate an enemy's shield and kill it on the same turn in single player
Jump two stories in one move in single player
Complete Deluge
Staff the Research Labs with 80 scientists.
Deal with the newest global threat
Make certain of the new threat's location
Eliminate all alien waves
Get at least 4 kills with XCOM Base Security personnel
Kill a Muton Berserker in melee combat in single player
Deploy three tactical subsystems on a single soldier in single player
Augment a soldier in single player
Gain access to the lowest level in your base.
Staff the Engineering Department with 80 engineers.
Build a suit of powered armor.
Proc Combat Rush on the entire squad (min. 4)
Kill an elite enemy Medic with explosive damage in single player
Kill an elite enemy Sniper with one of your own snipers in single player
Get satellite coverage over every country on one continent.
Fulfill a Council request.
Beat a new special mission without losing any assets
Modify a soldier in single player
Acquire 1000 credits in one month.
Advance one of your soldiers to Colonel rank.
Eradicate the infestation
Build a Workshop.
Build a Laboratory.
Stop a squad member from suffocating in single player
Launch a Satellite.
Build an item.
Shoot down a UFO.
Complete a Research Project.
Build a base facility.
Complete a mission without losing a soldier.
Kill 50 aliens with explosive weapons.
Kill 150 aliens.
Kill 500 aliens.
Beat the game in Ironman mode on Classic or Impossible Difficulty.
Win a multiplayer match.
Mind Control an Ethereal. Single player only.
Beat the game on Classic difficulty.
Beat the game on Impossible difficulty.
Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
Have a soldier survive every mission in a full game.
In a single game, complete every Research Project.
Kill an alien while flying. Single player only.
In a single game, shoot down one of each alien craft.
Play a multiplayer match against someone with this achievement.
In a single game, complete every Foundry project.
Build a S.H.I.V.
Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
Win the game from each of the 5 starting locations.
Complete the tutorial mission.
Win a mission with an all-female squad. Single player only.
Get a Soldier to have 5 modifications in single player
Beat the game without buying a Squad Size upgrade (Classic+ difficulty)
Field a fully enhanced squad and win the mission
Field a squad with 4 augmented soldiers, each with a different base ability and win the mission
Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission
Field a squad where all members have at least two modifications (min. 4) and win the mission
Have your special-duty soldier kill three enemies in the same mission
Kill an unseen enemy detected by a specially modified soldier in single player
Cause an enemy to suicide
Designate a highly decorated soldier as the Volunteer
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