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