btw not really an issue, but while loading the game, can there be a load% or progress bar or indicator? (you know just for all those slow connections out there)
I'm not sure how to say this but, the view of the screen should move with a fixed distance on both sides of the character ( I mean I should be able to turn around and see enemies that are far behind me).
Types of tricks you can perform : hold the following when about to go on a ramp : down arrow= backflip, up arrow = front flip, left /right arrow=roll over to that side, up+left/right arrows= spin left/right. Also note that you can get higher score by occasionally jumping from a ramp to the side railings and back to another ramp.
The third badge is just hard but not enough be an impossible badge. Also this game is under the music tags section which not many people check. For example see Cyclomaniacs 2(approx. same time of game release) or any other game of another category and you can see a huge difference in number of awarded badges just because its of another category and not music.