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