They are only marginally supernatural and they promise eternal life. They don't kill - they foster addiction. I understand your need to be hopeful. There are gradations of narcissism. We often confuse shame with guilt.
Narcissists feel shameful when confronted with a failure.
Their omnipotence is threatened, their sense of perfection and uniqueness is questioned. The narcissist punishes himself for failing to be God - not for the maltreatment of others. The narcissist makes an effort to communicate his pain and shame in order to elicit the NS needed to restore and regulate his failing self-worth. In doing so, the narcissist resorts to the human vocabulary of empathy. It is a manipulative ploy - not a confession of real emotions or an authentic description of internal dynamics.