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