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