Xbox 360 Achievements have posted the complete list:

Unbound (10g) – Complete “Unbound”
Bleak Falls Barrow (10g) – Complete “Bleak Falls Barrow”
The Way of the Voice (20g) – Complete “The Way of the Voice”
Diplomatic Immunity (20g) – Complete “Diplomatic Immunity”
Alduin’s Wall (20g) – Complete “Alduin’s Wall”
Elder Knowledge (20g) – Complete “Elder Knowledge”
The Fallen (20g) – Complete “The Fallen”
Dragonslayer (50g) - Complete “Dragonslayer”
Take Up Arms (10g) – Join the Companions
Blood Oath (10g) – Become a member of the Circle
Glory of the Dead (30g) – Complete “Glory of the Dead”
Gatekeeper (10g) – Join the College of Winterhold
Revealing the Unseen (10g) – Complete “Revealing the Unseen”
The Eye of Magnus (30g) – Complete “The Eye of Magnus”
Taking Care of Business (10g) – Join the Thieves Guild
Darkness Returns (10g) – Complete “Darkness Returns”
One with the Shadows (30g) – Returned the Thieves Guild to its former glory
With Friends Like These… (10g) – Join the Dark Brotherhood
Bound Until Death (10g) – Complete” Bound Until Death”
Hail Sithis! (30g) – Complete “Hail Sithis!”
Taking Sides (10g) – Join the Stormcloaks or the Imperial Army
War Hero (10g) – Capture Fort Sunguard or Fort Greenwall
Hero of Skyrim (30g) – Capture Solitude or Windhelm
Sideways (20g) – Complete 10 side quests
Hero of the People (30g) – Complete 30 Misc Objectives
Hard Worker (10g) – Chop wood, mine ore, and cook food
Thief (30g) – Pick 50 locks and 50 pockets
Snake Tongue (10g) – Successfully persuade, bribe, and intimidate
Blessing (10g) – Select a Standing Stone blessing
Standing Stones (30g) – Find 13 Standing Stones
Citizen (10g) – Buy a house
Wanted (10g) – Escape from jail
Married (10g) – Get married
Artificer (10g) – Make a smithed item, an enchanted item, and a potion
Master Criminal (20g) – Bounty of 1000 gold in all nine holds
Golden Touch (30g) – Have 100,000 gold
Delver (40g) – Clear 50 dungeons
Skill Master (40g) – Get a skill to 100
Explorer (40g) – Discover 100 locations
Reader (20g) – Read 50 Skill Books
Daedric Influence (10g) – Acquire a Daedric Artifact
Oblivion Walker (30g) – Collect 15 Daedric Artifacts
Dragon Soul (10g) – Absorb a dragon soul
Dragon Hunter (20g) – Absorb 20 dragon souls
Words of Power (10g) – Learn all three words of a shout
Thu'um Master (40g) – Learn 20 shouts
Apprentice (5g) – Reach Level 5
Adept (10g) – Reach Level 10
Expert (25g) – Reach Level 25
Master (50g) – Reach Level 50