Full list of all 75 The Elder Scrolls V: Skyrim achievements worth 1,550 gamerscore.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 25 achievements worth 550 Gamerscore.
Complete "Alduin's Wall"
Find 13 Standing Stones
Learn 20 shouts
Complete 10 side quests
Complete "Darkness Returns"
Reach Level 50
Read 50 Skill Books
Complete "Hail Sithis!"
Complete "Bound Until Death"
Join the Dark Brotherhood
Clear 50 dungeons
Complete "Glory of the Dead"
Complete "The Eye of Magnus"
Complete "Revealing the Unseen"
Complete "Dragonslayer"
Complete "The Fallen"
Absorb 20 dragon souls
Complete "Elder Knowledge"
Discover 100 Locations
Complete 50 Misc Objectives
Join the Thieves Guild
Successfully persuade, bribe, and intimidate
Reach Level 25
Join the College of Winterhold
Get a skill to 100
Complete "Diplomatic Immunity"
Get married
Buy a house
Learn all three words of a shout
Acquire a Daedric Artifact
Reach Level 10
Select a Standing Stone blessing
Become a member of the Circle
Join the Companions
Complete "The Way of the Voice"
Reach Level 5
Absorb a dragon soul
Complete "Bleak Falls Barrow"
Complete "Unbound"
Returned the Thieves Guild to its former glory
Join the Stormcloaks or the Imperial Army
Capture Fort Sungard or Fort Greenwall
Capture Solitude or Windhelm
Chop wood, mine ore, and cook food
Pick 50 locks and 50 pockets
Escape from jail
Make a smithed item, an enchanted item, and a potion
Bounty of 1000 gold in all nine holds
Have 100,000 gold
Collect 15 Daedric Artifacts
Complete "Awakening"
Complete "Beyond Death"
Complete "Kindred Judgment"
Complete "Lost to the Ages"
Learn all three words of Soul Tear
Use the special power of Auriel's Bow
Acquire 11 werewolf perks
Acquire 11 vampire perks
Change your face
Defeat a Legendary Dragon
Adopt a child
Buy a plot of land
Build three wings on a house
Buy three plots of land
Build three houses
Complete "The Path of Knowledge"
Complete "The Temple of Miraak"
Arrive on Solstheim
Complete "At the Summit of Apocrypha"
Learn all 3 words of Dragon Aspect
Learn the secrets of 5 Black Books
Craft an item out of Stalhrim
Tame and ride 5 dragons
Own a house in Raven Rock
Discover 30 locations on the island of Solstheim