I actually thought the second badge was easy for a medium. The two hardest levels for me were ones where I failed to realize I was allowed to use two shots for a gold medal.
Update to my previous comment: the shift key game is fine on my MacBook, but unplayable on my iMac. I guess it's not a Mac-only thing then. It may be a Firefox version thing: it doesn't work in Firefox 4 on my iMac, but it does work in Firefox 3 on my MacBook.
I can't do the purple blob gap jump on my iMac---neither shift key makes it jump. Oddly, "shift" is acting like "W", making the green ball move left. Am I missing something?
If there's no unique solution, how can you consistently apply any strategy? Whenever I get stuck, there's the nagging question of whether it's because I haven't searched deeply enough, or just because there are multiple actions that will work equally well. It kills the enjoyment for me.
Dig the idea of a tournament where you die if you lose and even if you win you'll be maimed for life. "Yeah, I got shot through the throat, stomach, and both knees, but I won GunBlood 2010!"
Performance issue: it starts out fine, but performance decreases as I play. After 1800 seconds in survival mode, it had become so laggy it was barely playable. I turned quality all the way down, turned off all graphics effects, but it was still too slow to play. This is using Safari on Mac OS 10.6.3.