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