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