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