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