The Zerg are from Starcraft, ArtistofWarfare, and a 'blitz' is generally referred to as a 'Rush', but I suppose that's unimportant. Of course, since I know that, I apparently offend you. I'm sorry.

Really, anyone that bothers to register on an internet forum is a pretty hardcore player, no matter what their strategy. The Hardcore/Casual barrier is about time spent playing, not how you play.