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