Here is the full list of all 36 Conan Exiles achievements.
Kill something by standing on its head
Defeat the Giant Spider
Defeat the Undead Dragon
Defeat Hrungnir of the Frost
Reach level 60
Defeat the King Beneath
Defeat the Kinscourge
Defeat the Giant Crocodile
Defeat the Sewer Abomination
Reach the volcano
Reach the skies above the Exiled Lands
Reach the highlands
Put an enemy in the Wheel of Pain
Craft an Exceptional or Flawless item
Reach level 50
Fall for 3 seconds without dying
Create your first building
Reach level 40
Reach level 30
Reach level 20
Reach level 10
Use a religious altar
Complete the first chapter of the Journey
Get a Dedicated Weapon
Sleep on a bed or bedroll