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