Guardian of Earth
Designate a highly decorated soldier as the Volunteer
100 
Apotheosis Denied
Deal with the newest global threat
100 
An Army Of Four
Beat the game without buying a Squad Size upgrade (Classic+ difficulty)
100 
Where in the World
Make certain of the new threat's location
40 
By Our Powers Combined
Field a squad with 4 augmented soldiers, each with a different base ability and win the mission
40 
Mental Minefield
Kill an enemy as it is psionically attacking you in single player
40 
Remington… Max Remington
Have your special-duty soldier kill three enemies in the same mission
40 
Tingling Sensation
Kill an unseen enemy detected by a specially modified soldier in single player
40 
Pain in the Neck
Cause an enemy to suicide
40 
Elite Defense
Beat a new special mission without losing any assets
40 
Steel Martyr
Deploy three tactical subsystems on a single soldier in single player
40 
Who Needs Limbs?
Augment a soldier in single player
20 
Shieldbuster
Eliminate an enemy's shield and kill it on the same turn in single player
20 
Someone Your Own Size
Kill a Muton Berserker in melee combat in single player
20 
Taking A Load Off
Stop a squad member from suffocating in single player
20 
Mind the Step
Jump two stories in one move in single player
20 
Nice Cover
Use Collateral Damage to blow up a car in single player
20 
Rise of the Machines
Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission
20 
Mutatis Mutandis
Field a squad where all members have at least two modifications (min. 4) and win the mission
20 
A Little Bit Alien
Modify a soldier in single player
20 
Anger Management
Proc Combat Rush on the entire squad (min. 4)
20 
G’day
Kill an elite enemy Sniper with one of your own snipers in single player
20 
Regenerate This
Kill an elite enemy Medic with explosive damage in single player
20 
Solid Prospect
Complete Deluge
20 
Ours are the Furies
Complete Furies
20 
Enemy Within
Get a Soldier to have 5 modifications in single player
20 
All Hands On Deck
Get at least 4 kills with XCOM Base Security personnel
20 
They Shall Not Pass
Eliminate all alien waves
20 
Zom-B-Gone
Eradicate the infestation
20 
The Meld Squad
Field a fully enhanced squad and win the mission
20