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