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