actually, going farther into the game (>70), it seems that the game depends too much on the luck of the draw: whether you get the right power "circle" at the right time. however, my previous compliments still stay :) (JadedRadiance also has a good point. Having a game only using the mouse was quite ambitious, and while it does work most of the time, sometimes I wish you could move backwards and fire at the same time)
Very addictive game, and I can already tell that there was tons of creativity behind this. It ressembles a spin-off of Red, but Red itself was highly original also. Very good work! *goes back to trying to get hard badge*