yeah..
this reminded me of project monocrome. anyway, try and put a new level in or something, otherwise it gets too repetitive. also, put in some powerups for the gun, like rapidfire. I thought the recoil on the lazer cannon was a good idea. I kinda liked the techno music, maby put in some more music, so it not just one thing on a loop. one thing you might want to try is a random field generator, like in the krazy kart games.