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