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