XCOM: Enemy Within

You Win, Everything

Deal with the newest global threat

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

Make certain of the new threat's location

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

Designate a highly decorated soldier as the Volunteer

Get a Soldier to have 5 modifications in single player

Deploy three tactical subsystems on a single soldier in single player

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

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

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

Complete Furies

Beat a new special mission without losing any assets

Augment a soldier in single player

Modify a soldier in single player

Eliminate all alien waves

Eradicate the infestation

Field a fully enhanced squad and win the mission

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

Kill a Muton Berserker in melee combat in single player

Stop a squad member from suffocating in single player

Jump two stories in one move in single player

Use Collateral Damage to blow up a car in single player

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

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

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

Kill an elite enemy Medic with explosive damage in single player

Complete Deluge

Get at least 4 kills with XCOM Base Security personnel