Full list of all 75 The Elder Scrolls V: Skyrim achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 3 DLC packs containing 25 achievements.
Learn 20 shouts
Absorb 20 dragon souls
Collect 15 Daedric Artifacts
Acquire a Daedric Artifact
Read 50 Skill Books
Have 100,000 gold
Bounty of 1000 gold in all nine holds
Get married
Escape from jail
Buy a house
Complete 50 Misc Objectives
Capture Solitude or Windhelm
Capture Fort Sungard or Fort Greenwall
Join the Stormcloaks or the Imperial Army
Join the Thieves Guild
Complete "The Eye of Magnus"
Complete "Revealing the Unseen"
Join the College of Winterhold
Complete "Glory of the Dead"
Join the Companions
Complete "Dragonslayer"
Complete "The Fallen"
Complete "Elder Knowledge"
Complete "Alduin's Wall"
Complete "Diplomatic Immunity"
Complete "The Way of the Voice"
Complete "Bleak Falls Barrow"
Complete "Unbound"
Complete "Hail Sithis!"
Complete "Bound Until Death"
Join the Dark Brotherhood
Returned the Thieves Guild to its former glory
Complete "Darkness Returns"
Find 13 Standing Stones
Select a Standing Stone blessing
Successfully persuade, bribe, and intimidate
Pick 50 locks and 50 pockets
Complete 10 side quests
Clear 50 dungeons
Learn all three words of a shout
Discover 100 Locations
Chop wood, mine ore, and cook food
Reach Level 25
Reach Level 50
Get a skill to 100
Make a smithed item, an enchanted item, and a potion
Become a member of the Circle
Reach Level 10
Reach Level 5
Absorb a dragon soul
Complete "At the Summit of Apocrypha"
Learn all 3 words of Dragon Aspect
Discover 30 locations on the island of Solstheim
Own a house in Raven Rock
Complete "The Path of Knowledge"
Complete "The Temple of Miraak"
Arrive on Solstheim
Learn the secrets of 5 Black Books
Craft an item out of Stalhrim
Tame and ride 5 dragons
Defeat a Legendary Dragon
Change your face
Acquire 11 vampire perks
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 "Kindred Judgment"
Complete "Beyond Death"
Complete "Awakening"
Adopt a child
Buy a plot of land
Build three wings on a house
Buy three plots of land
Build three houses