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