Controls require some getting used to, I expect this scheme more for a tank or a car, but I got used to it. Personaly I don't enjoy mazes, but I was able to complete them thanks to walkthrough, although not without difficilties :)
Music at the end is great, IMO it would fit better for the boss fight though :)
Btw. I found out that you can attack with any mouse button, but for some reason only middle mouse button does not produce laser sound effect, while LMB and RMB do. Just something interesting I noticed :)