HaHa, your project is named almost like mine, but mine doesn't have underlines.

Anyway, you seem to have put too many particle lights, which causes a slight lag when shooting fireballs, you could use GPU particles and only a few CPU particles with light. I think the rate at which you can shoot fireballs is too fast and the enemies seem to endlessly spawn, making it hard to move around in such a small space. Maybe you could put a limit to the spawning ghosts that increases over time and also expand the arena a little.

I really liked the art though, and the controls are very responsive.