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