You Win

You Win, Everything. 5.1%

Very Rare 1.62%

Ultra Rare

Enemy Within

Get a Soldier to have 5 modifications. 9.9%

Very Rare 9.68%

Very Rare

Steel Martyr

Deploy three tactical subsystems on a single soldier. 11.8%

Very Rare 10.72%

Rare

Apotheosis Denied

Deal with the newest global threat. 11.6%

Very Rare 10.81%

Rare

They Shall Not Pass

Eliminate all alien waves. 14.3%

Very Rare 13.69%

Rare

Zom-B-Gone

Eradicate the infestation. 20.5%

Rare 21.16%

Uncommon

Someone Your Own Size

Kill a Muton Berserker in melee combat. 9.8%

Very Rare 8.56%

Very Rare

Where in the World

Make certain of the new threat's location. 10.8%

Very Rare 8.98%

Very Rare

Rise of the Machines

Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission. 6.6%

Very Rare 4.92%

Ultra Rare

Mental Minefield

Kill an enemy as it is psionically attacking you. 6.9%

Very Rare 5.02%

Very Rare

Tingling Sensation

Kill an unseen enemy detected by a specially modified soldier. 6.6%

Very Rare 4.41%

Ultra Rare

Pain in the Neck

Cause an enemy to suicide. 11.8%

Very Rare 11.16%

Rare

Elite Defense

Beat a new special mission without losing any assets. 18.5%

Rare 18.32%

Rare

Guardian of Earth

Designate a highly decorated soldier as the Volunteer. 6.1%

Very Rare 4.10%

Ultra Rare

No Looking Back

Beat the game in Ironman mode on Classic or Impossible difficulty. 5.4%

Very Rare 2.19%

Ultra Rare

Xavier

Mind Control an Ethereal. 5.9%

Very Rare 3.51%

Ultra Rare

Humanity's Savior

Beat the game on any difficulty. 9.6%

Very Rare 8.60%

Very Rare

Earth First

Beat the game on Classic difficulty. 5.7%

Very Rare 2.67%

Ultra Rare

Our Finest Hour

Beat the game on Impossible difficulty. 5.2%

Very Rare 1.71%

Ultra Rare

Lone Wolf

Clear a UFO crash site with one soldier on Classic or Impossible difficulty. 5.5%

Very Rare 2.59%

Ultra Rare

Welcoming Committee

Kill 150 aliens. 23.4%

Rare 23.99%

Uncommon

Ain't No Cavalry Comin'

Have a soldier survive every mission in a full game. 5.5%

Very Rare 2.82%

Ultra Rare

Edison

In a single game, complete every Research Project. 6.1%

Very Rare 3.80%

Ultra Rare

All Employees Must Wash Hands...

In a single game, complete every Autopsy. 11.5%

Very Rare 10.37%

Rare

Beyond the Veil

Find a soldier with the Gift. 12.0%

Very Rare 11.03%

Rare

Prisoner of War

Capture a live alien. 34.9%

Rare 39.59%

Uncommon

The Gatekeeper

Stun an Outsider. 25.0%

Rare 27.05%

Uncommon

X Marks the Spot

Uncover the alien base's location. 22.4%

Rare 23.69%

Uncommon

On the Shoulders of Giants

Build the Gollop Chamber. 10.9%

Very Rare 9.76%

Very Rare

All Together Now

Get satellite coverage over every country on one continent. 17.7%

Rare 18.49%

Rare

Hunter/Killer

In a single game, shoot down one of each alien craft. 7.9%

Very Rare 5.92%

Very Rare

We Happy Few

Complete a mission without losing a soldier. 66.3%

Common 75.16%

Common

The Hardest Road

Advance one of your soldiers to Colonel rank. 18.0%

Rare 17.99%

Rare

Worth Every Penny

Acquire 1000 credits in one month. 15.7%

Rare 15.25%

Rare

Skunkworks

In a single game, complete every Foundry project. 7.6%

Very Rare 5.82%

Very Rare

Theory...

Build a Laboratory. 26.0%

Rare 29.04%

Uncommon

...and Practice

Build a Workshop. 29.0%

Rare 32.02%

Uncommon

Wet Work

Complete a Very Difficult abduction mission in five turns or less on Classic or Impossible difficulty. 5.7%

Very Rare 2.67%

Ultra Rare

Drums in the Deep

Gain access to the lowest level in your base. 16.5%

Rare 17.40%

Rare

Happy to Oblige

Fulfill a Council request. 39.2%

Rare 44.02%

Uncommon

Off My Planet

Recover the Hyperwave Beacon. 16.6%

Rare 16.60%

Rare

Tables Turned

Shoot down a UFO. 55.6%

Common 63.67%

Common

The Volunteer

Make contact with the Ethereal hive mind. 10.2%

Very Rare 8.99%

Very Rare