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