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