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