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