Again I must say that the comments posted here are really good. People add their two cents to note another aspect of something. They give an example. They give their own impressions. It all helps us understand. And understanding NPD is the key to avoiding or escaping victimization by somebody else's disease.
Though each narcissist has his or her own strategy, optimized for their particular situation in life, at bottom they're all the same. So much the same that they could be clones. That would be evident if they all had the same situation in life.
Ironically, they are each convinced that they're unique, special.
It seems to me that they are machines. You can't get them to behave the way you want them to, because they aren't programmed to. But if you know what they're programmed to do, you can control them like you control a software program -- just by pushing the their buttons.
Wanna see a smile? Flatter them. Wanna see a temper tantrum? Depart from their script by acting like their equal. Wanna see a rage? Try to appease one of their fits. Like I said, it's like pushing buttons.