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