Will Blitz be a gametype and just have different modes, i.e. Exhibition and Sudden Death? Will the challenges be just a list of tasks that you complete while playing the various game modes? (MW2) If this is case, does the list include challenges that can be completed while playing Crossfire, too? Or is it more of a list of missions that you pick from and it loads that mission with the specific settings and you earn cash for beating it? (Arkham Asylum's Challenge Rooms) Again, I realize you may not be able to answer some of these, but there's no harm in trying.