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