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