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