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