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