Whew, didn't know if I'd be able to get the Hard badge because of that 6th challenge, but now I've gone from 4 miles to 8 miles in just 2 tries. The only thing I changed was to use the break more often (or at all). It's pretty useful for avoiding mines and letting the cop cars move beyond you. Also, make sure you're moving forward and backward a lot, not just up and down. It seems obvious but it can really improve your ability to avoid obstacles.
I always thought this was really hard but once I realized you just had to focus on collecting the same powerups each time, I beat it with 1 life. I don't think it even matters which powerups you go for; just get them up to level 10 and level 3, then try to keep your first life going for as long as you can.
It was a fun game right up until you unlock Papa and realize that you still have to do another 15 days for absolutely no reason. Just have him unlock when your rank increases like everybody else ffs. I don't think I can properly describe how idiotic this decision was.
haha, I was having trouble with level 9 and starting to get frustrated and then I realized firing my cannon wasn't my only means of transportation...duh