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