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