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