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