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