If you're having trouble w/the 600 seconds badge, the sneaky way to do it is with the first HUGE asteroid. As long as a "boss" asteroid is on the screen, no others can come. So, do your best to keep it on the screen for ten minutes. That's how I did it!
 "Feed the King"){kind=icon}
 "Don't Look Back"){kind=icon}
 "Red"){kind=icon}
 "Factory Balls"){kind=icon}