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