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.
Join the Stormcloaks or the Imperial Army
Join the Dark Brotherhood
Bounty of 1000 gold in all nine holds
Complete "Unbound"
Complete "Dragonslayer"
Complete "The Fallen"
Complete "Elder Knowledge"
Complete 50 Misc Objectives
Reach Level 50
Absorb 20 dragon souls
Find 13 Standing Stones
Acquire a Daedric Artifact
Complete "Alduin's Wall"
Successfully persuade, bribe, and intimidate
Complete "Glory of the Dead"
Discover 100 Locations
Complete "Diplomatic Immunity"
Become a member of the Circle
Get a skill to 100
Make a smithed item, an enchanted item, and a potion
Read 50 Skill Books
Learn all three words of a shout
Reach Level 25
Complete "The Way of the Voice"
Join the College of Winterhold
Reach Level 10
Buy a house
Reach Level 5
Join the Companions
Absorb a dragon soul
Complete "Bleak Falls Barrow"
Have 100,000 gold
Select a Standing Stone blessing
Complete "Revealing the Unseen"
Complete "The Eye of Magnus"
Join the Thieves Guild
Complete "Darkness Returns"
Returned the Thieves Guild to its former glory
Complete "Bound Until Death"
Complete "Hail Sithis!"
Capture Fort Sungard or Fort Greenwall
Capture Solitude or Windhelm
Complete 10 side quests
Chop wood, mine ore, and cook food
Pick 50 locks and 50 pockets
Escape from jail
Get married
Clear 50 dungeons
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
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
Change your face
Defeat a Legendary Dragon
Adopt a child
Buy a plot of land
Build three wings on a house
Buy three plots of land
Build three houses