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