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