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