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