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