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