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