Disabled medal is very easy, just upgrade flak to max & put 1 or 2 upgrades on shield recharger. Voila, you got non-stop flak action 100% of the time, just try to keep recharger alive
Wish the music was in better quality, its a good song. One annoying thing is when you restart there is sometimes objects left from the part where you died. I had a green ball in the middle of the screen when i was trying to dodge the 6 cannon barrage :(
But i must confess that this game really grows on me. I started off just playing it for badges, but now i find myself playing a game or two whenever i feel bored