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