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