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