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