Hints: For the hard badge, try to memorize the path by beating it at least 2 times.For each death, you lose 20 secs(+20), and for each kill,gain 1 sec(-1), so go calm, don't use the rockets unless you are sure that the path is clear, kill everything to clear the path. Without any deaths and mistakes, you can make this with~6:30, so you have 1:30 to waste