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