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