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