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