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