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