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