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