I'm Not Sure What Happened
To be honest, this game is utterly forgettable. Other than the interesting nature of your upgradable mech, I have trouble even remembering all of the enemies a full 24 hours after playing this game. The game is just utterly lackluster. On the other hand, I played through the entire thing, something I rarely do with games I don't like. I think it had something to do with how I only died once, and that was in the last level; I was driven by some strange compulsion to continue the thing's life, and when I died, all interest I had in the game vanished.
It's repetitive, a little boring, the art is disappointing other than the flying robot which looks good but doesn't even animate, the window seems too small when you get to the higher levels, and it's pretty easy to boot. It's passable as a diversion, but then again it's nothing more than that. Totally average.