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