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