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