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