I didn't think I'd ever get that bounty done either. Last game of the day went in not caring if it was a win or loss. Got 23 kills, over 2800 points and 5.75 k/d and I'm not that great. Sometimes you play well and also get matched against a much worse team and get lucky. Just keep at it and it may happen. I think I got a few double and triple downs that game too which can jack your score. Got lucky getting double kills on injured opponents, multiple opponents walking into my machine gun, by sticking with my team and multi kills with blade dancer. I was playing solo too.