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