First off, Not a fighting game. More of a multi directional shooter. Secondly, it's not a good one. There isn't much to set it aside from some of the really good ones. One problem I found is your Isometric movement. (For example, take a look at the movement of solstice for the nes. Good music, interesting graphics but bad controls.)
You could do a lot to make this game more likable. Give it a story line and some variety in the levels and enemies.