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