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