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