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