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