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