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