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