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