Repetitive, Bad level design, not implemented well
Graphics were good, as was the interactivity.
The style wasn't all that original, and the sound was repetitive.
What really p*ssed me off though, was that there were only about 5 level shapes, and you just repeated them with different mobs, thats lazy. And the fact that the "reset level" didn't properly reset the level, it just moved you back to the start with full hp.
(note: to reset the level all mobs and objects must be set to their original starting position, this was not happening).
The one level with the S shaped path and the spinning circles, every time I died, the f*cking spinning circles were at different timings and positions, have you ever done any reading on level design? Some of the attempts at that level were simply impossible, there was no available path to take, and thats really poor.
Other than that, the gun wasn't really used enough, and it wasn't puzzling, it wasn't really a skill based game either, just luck. I'd like to see some puzzles, if not, try to make it more like micro machines (that is what it felt like, just not as good).