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