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