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