is_secretproperty determines whether or not it is returned to the calling application for normal requests. It is boolean and must therefore be equal to one of the following values:
trueis intended to be kept hidden from the player. It is recommended to make an achievement "secret" if it contains a spoiler you don't want to reveal too early, eg. "Discover that you were a ghost all along!".
false) is one where the player can know about the achievement prior to having earned it.
custom_idand asigned to its
custom_criteria_group_idproperty. This is where you begin to define the different criteria that must be met in order for the player to earn the achievement and be awarded a badge.