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