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