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