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