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