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