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