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