XCOM: Enemy Unknown

Combat Ready
Reward: 5 Points
Objective: Build an item.

Eye in the Sky
Reward: 5 Points
Objective: Launch a Satellite.

Up and Running
Reward: 5 Points
Objective: Build a base facility.

What Wonders Await
Reward: 5 Points
Objective: Complete a Research Project.

...and Practice
Reward: 10 Points
Objective: Build a Workshop.

All Employees Must Wash Hands...
Reward: 10 Points
Objective: In a single game, complete every Autopsy.

All Together Now
Reward: 10 Points
Objective: Get satellite coverage over every country on one continent.

Bada Boom
Reward: 10 Points
Objective: Kill 50 aliens with explosive weapons.

Drums in the Deep
Reward: 10 Points
Objective: Gain access to the lowest level in your base

Man No More
Reward: 10 Points
Objective: Build a suit of powered armor.

Tables Turned
Reward: 10 Points
Objective: Shoot down a UFO.

The Hardest Road
Reward: 10 Points
Objective: Advance one of your soldiers to Colonel rank.

Theory...
Reward: 10 Points
Objective: Build a Laboratory.

We Happy Few
Reward: 10 Points
Objective: Complete a mission without losing a soldier.

Wet Work
Reward: 10 Points
Objective: Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.

You Have 5 Seconds to Comply
Reward: 10 Points
Objective: Build a S.H.I.V

And So It Begins...
Reward: 15 Points
Objective: Complete the tutorial mission.

Happy to Oblige
Reward: 15 Points
Objective: Fulfill a Council request.

Hunter/Killer
Reward: 15 Points
Objective: In a single game, shoot down one of each alien craft.

Lone Wolf
Reward: 20 Points
Objective: Clear a UFO crash site with one soldier on Classic or Impossible difficulty

One Gun at a Time
Reward: 20 Points
Objective: Staff the Engineering Department with 80 engineers

Oppenheimer
Reward: 20 Points
Objective: Staff the Research Labs with 80 scientists.

Skunkworks
Reward: 20 Points
Objective: In a single game, complete every Foundry project.

Welcoming Committee
Reward: 20 Points
Objective: Kill 150 aliens.

Worth Every Penny
Reward: 20 Points
Objective: Acquire 1000 credits in one month.

As A Scalpel
Reward: 25 Points
Objective: Earn the "Excellent" rating in every performance category on a terror mission.

Edison
Reward: 25 Points
Objective: In a single game, complete every Research Project.

Humanity's Savior
Reward: 30 Points
Objective: Beat the game on any difficulty.

Shooting Stars
Reward: 35 Points
Objective: Shoot down 40 UFOs.

A Continental Fellow
Reward: 50 Points
Objective: Win the game from each of the 5 starting locations.

Ain't No Cavalry Comin'
Reward: 50 Points
Objective: Have a soldier survive every mission in a full game.

Pale Horse
Reward: 50 Points
Objective: Kill 500 aliens.

Earth First
Reward: 60 Points
Objective: Beat the game on Classic difficulty.

Our Finest Hour
Reward: 90 Points
Objective: Beat the game on Impossible difficulty.

No Looking Back 1
Reward: 00 Points
Objective: Beat the game in Ironman mode on Classic or Impossible difficulty

Secret Achievements

And Hell's Coming With Me
Reward: 10 Points
Objective: Successfully assault an Overseer UFO.

Angel of Death
Reward: 10 Points
Objective: Kill an alien while flying. Single player only.

Beyond the Veil
Reward: 10 Points
Objective: Find a soldier with the Gift.

Flight of the Valkyries
Reward: 10 Points
Objective: Win a mission with an all-female squad. Single player only.

On the Shoulders of Giants
Reward: 10 Points
Objective: Build the Gollop Chamber.

Poison Control
Reward: 10 Points
Objective: Cure poison on five soldiers in a single mission. Single player only.

Prisoner of War
Reward: 10 Points
Objective: Capture a live alien.

Ride the Lightning
Reward: 10 Points
Objective: Build a Firestorm.

See All, Know All
Reward: 10 Points
Objective: Build the Hyperwave Relay.

The Gatekeeper
Reward: 10 Points
Objective: Stun an Outsider.

The Volunteer
Reward: 10 Points
Objective: Make contact with the Ethereal hive mind.

X Marks the Spot
Reward: 10 Points
Objective: Uncover the alien base's location.

Xavier
Reward: 10 Points
Objective: Mind Control an Ethereal. Single player only.

Meet New People. Then Kill Them.
Reward: 25 Points
Objective: Win a multiplayer match.

Off My Planet
Reward: 25 Points
Objective: Recover the Hyperwave Beacon.