Just curious what your best kill streaks are, I know we've got some talented players here. I'm stuck trying to get one of my Prime Mode challenges... I have to get 20 kills without being killed myself and that's only the second tier of the challenge, I'm assuming tier 3 is 25 kills. I've gotten to 19 with my Scientist three times before getting killed, so close I can taste it but I always die right as I'm about to pull it off... though 19-1 is a good score for any game. So, what are your personal bests, what classes did you get 'em with? Got any tips for the rest of the class?