XCOM: Enemy Within

You Win

You Win, Everything

Who Needs Limbs?

Augment a soldier in single player

A Little Bit Alien

Modify a soldier in single player

Enemy Within

Get a Soldier to have 5 modifications in single player

Steel Martyr

Deploy three tactical subsystems on a single soldier in single player

Apotheosis Denied

Deal with the newest global threat

They Shall Not Pass

Eliminate all alien waves

Zom-B-Gone

Eradicate the infestation

An Army of Four

Beat the game without buying a Squad Size upgrade on Classic or Impossible difficulty

The Meld Squad

Field a fully enhanced squad and win the mission

Shieldbuster

Eliminate an enemy's shield and kill it on the same turn in single player

Someone Your Own Size

Kill a Muton Berserker in melee combat in single player

Taking A Load Off

Stop a squad member from suffocating in single player

Where in the World

Make certain of the new threat's location

Mind the Step

Jump two stories in one move in single player

Nice Cover

Use Collateral Damage to blow up a car in single player

By Our Powers Combined

Field a squad with 4 augmented soldiers, each with a different base ability and win the mission

Rise of the Machines

Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission

Mutatis Mutandis

Field a squad where all members have at least two modifications (min. 4) and win the mission

Mental Minefield

Kill an enemy as it is psionically attacking you in single player

Anger Management

Proc Combat Rush on the entire squad (min. 4)

Remington... Max Remington

Have your special-duty soldier kill three enemies in the same mission

G'day

Kill an elite enemy Sniper with one of your own snipers in single player

Regenerate This

Kill an elite enemy Medic with explosive damage in single player

Tingling Sensation

Kill an unseen enemy detected by a specially modified soldier in single player

Pain in the Neck

Cause an enemy to suicide

Solid Prospect

Complete Deluge

Ours are the Furies

Complete Furies

Elite Defense

Beat a new special mission without losing any assets

Guardian of Earth

Designate a highly decorated soldier as the Volunteer

All Hands On Deck

Get at least 4 kills with XCOM Base Security personnel