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