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
Collect 15 Daedric Artifacts
Clear 50 dungeons
Returned the Thieves Guild to its former glory
Have 100,000 gold
Complete "Darkness Returns"
Find 13 Standing Stones
Discover 100 Locations
Read 50 Skill Books
Complete "The Eye of Magnus"
Complete "Revealing the Unseen"
Complete 50 Misc Objectives
Reach Level 50
Get married
Chop wood, mine ore, and cook food
Complete "Glory of the Dead"
Pick 50 locks and 50 pockets
Become a member of the Circle
Get a skill to 100
Reach Level 25
Buy a house
Complete "Dragonslayer"
Complete "The Fallen"
Complete "Elder Knowledge"
Join the College of Winterhold
Complete "Alduin's Wall"
Complete "Diplomatic Immunity"
Complete "Hail Sithis!"
Successfully persuade, bribe, and intimidate
Complete "Bound Until Death"
Acquire a Daedric Artifact
Reach Level 10
Make a smithed item, an enchanted item, and a potion
Join the Dark Brotherhood
Escape from jail
Select a Standing Stone blessing
Learn all three words of a shout
Complete "The Way of the Voice"
Join the Thieves Guild
Join the Companions
Reach Level 5
Absorb a dragon soul
Complete "Bleak Falls Barrow"
Complete "Unbound"
Join the Stormcloaks or the Imperial Army
Capture Fort Sungard or Fort Greenwall
Capture Solitude or Windhelm
Complete 10 side quests
Bounty of 1000 gold in all nine holds
Learn 20 shouts
Discover 30 locations on the island of Solstheim
Complete "At the Summit of Apocrypha"
Complete "The Path of Knowledge"
Own a house in Raven Rock
Learn all 3 words of Dragon Aspect
Complete "The Temple of Miraak"
Arrive on Solstheim
Learn the secrets of 5 Black Books
Craft an item out of Stalhrim
Tame and ride 5 dragons
Use the special power of Auriel's Bow
Complete "Kindred Judgment"
Defeat a Legendary Dragon
Complete "Beyond Death"
Complete "Awakening"
Complete "Lost to the Ages"
Learn all three words of Soul Tear
Acquire 11 werewolf perks
Acquire 11 vampire perks
Change your face
Adopt a child
Buy a plot of land
Build three wings on a house
Buy three plots of land
Build three houses