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