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