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