It is a neat little project. Got to level eight and reached the boss, this is a nice starter project and I think you have done some interesting things with the mz engine. Could not seem to damage the boss or it is simply the health bar that is broken.
Weird fucked up feeling throughout the game, it is hardly perfect, but I enjoyed my experience. Improvements would be new attack animations instead of the standard rpg maker ones, unique sound effects and heal upon leveling up.