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