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