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