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