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