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