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