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