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