Order and DestructionEdit
Find and kill the Unmounted Manticore in Saphery at 53900, 19500 (above the waterfalls in the vicinity). It will drop a Partially Digested Manual, right click on it in your backpack to get the unlock.
Note: The one you want is the lonely Unmounted Manticore at the very top of the waterfalls. The pickup may not be registered in the loot window. Check your inventory.