Gah, although I failed to mention in my post below, it pretty much only works the first game, until you beat your high score the next game of course. Anybody know another way?
Its a good game. I enjoyed playing it a few times. As far as finding out how many headshots you have.... If you get a "Congrats, you've just achieved a high score!" in the chat box, click to open it. Then change the mod to "headshots." Thats the only way I know how. Enjoy!