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