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