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