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