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