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