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