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