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