I like the idea and it totally fits the theme, but I didn't understand how to actually find the real enemy.
You says he's a coward, so I suppose he tries to evade the mouse cursor. But even if sometimes I actually find an enemy who doesn't let himself be pointed at, there are other times where no one seem to care. I'm really confused.
Anyway, good job having done music, art and code all by yourself in 48 hours. That deserves credits.