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