I think this is a good game. My main problem with it is that it does just seem to go on forever. It's still nice to see all these interesting things going on with the enemies and stuff. My least favorite part was probably how hard it was to use the magic shots. It seemed like so much for one shot. Maybe you could have made it so that the shots automatically hit their target?
Then again, I haven't used the other upgrades. The sounds are decent too. It was cool how I couldn't understand what was going on with this. I was damaged by the enemy once and then I just had to keep on going. When I died from that, I went to another level, what?