X-COM: Enemy Unknown Cheats - Xbox 360

Achievements
Complete each achievement to get the allotted gamerscore:

...and Practice (10) - Build a Workshop.
A Continental Fellow (50) - Win the game from each of the 5 starting locations.
Ain't No Cavalry Comin' (50) - Have a soldier survive every mission in a full game.
All Employees Must Wash Hands... (10) - In a single game, complete every Autopsy.
No Looking Back (100) - Beat the game in Ironman mode on Classic or Impossible difficulty.
Off My Planet (25) - Recover the Hyperwave Beacon.
On the Shoulders of Giants (10) - Build the Gollop Chamber.
One Gun at a Time (20) - Staff the Engineering Department with 80 engineers
Oppenheimer (20) - Staff the Research Labs with 80 scientists.
Our Finest Hour (90) - Beat the game on Impossible difficulty.
Pale Horse (50) - Kill 500 aliens.
Poison Control (10) - Cure poison on five soldiers in a single mission. Single player only.
Prisoner of War (10) - Capture a live alien.
Ride the Lightning (10) - Build a Firestorm.
All Together Now (10) - Get satellite coverage over every country on one continent.
And Hell's Coming With Me (10) - Successfully assault an Overseer UFO.
And So It Begins... (15) - Complete the tutorial mission.
Angel of Death (10) - Kill an alien while flying. Single player only.
As A Scalpel (25) - Earn the "Excellent" rating in every performance category on a terror mission.
Bada Boom (10) - Kill 50 aliens with explosive weapons.
Beyond the Veil (10) - Find a soldier with the Gift.
Combat Ready (5) - Build an item.
Drums in the Deep (10) - Gain access to the lowest level in your base.
Earth First (60) - Beat the game on Classic difficulty.
Edison (25) - In a single game, complete every Research Project.
Eye in the Sky (5) - Launch a Satellite.
Flight of the Valkyries (10) - Win a mission with an all-female squad. Single player only.
Happy to Oblige (15) - Fulfill a Council request.
Humanity's Savior (30) - Beat the game on any difficulty.
Hunter/Killer (15) - In a single game, shoot down one of each alien craft.
Lone Wolf (20) - Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
Man No More (10) - Build a suit of powered armor.
Meet New People. Then Kill Them. (25) - Win a multiplayer match.
Theory... (10) - Build a Laboratory.
Up and Running (5) - Build a base facility.
We Happy Few (10) - Complete a mission without losing a soldier.
Welcoming Committee (20) - Kill 150 aliens.
Wet Work (10) - Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
See All, Know All (10) - Build the Hyperwave Relay.
Shooting Stars (35) - Shoot down 40 UFOs.
Skunkworks (20) - In a single game, complete every Foundry project.
Tables Turned (10) - Shoot down a UFO.
The Gatekeeper (10) - Stun an Outsider.
The Hardest Road (10) - Advance one of your soldiers to Colonel rank.
The Volunteer (10) - Make contact with the Ethereal hive mind.
What Wonders Await (5) - Complete a Research Project.
Worth Every Penny (20) - Acquire 1,000 credits in one month.
X Marks the Spot (10) - Uncover the alien base's location.
Xavier (10) - Mind Control an Ethereal. Single player only.
You Have 5 Seconds to Comply (10) - Build a S.H.I.V.

Additionally, there are five Slingshot DLC achievements:

All Aboard (30) - Complete Confounding Light with more than 3 turns left on the timer.
Bait the Hook (10) - Complete Confounding Light.
New Friend (10) - Complete Friends in Low Places.
Rising Dragon (30) - Take your new ally into the final challenge.
The Bigger They Are (20) - Complete Gangplank.