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