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