Nice job with the sfx! it is satisfying for realzies. The graphics are simple, but they got that pop in them, partly thanks to music.
What this game needs(ye, listen for some random guy on this one) is a goal, as what you do is just survive, I would love a way to fight back, to have a goal, not just score. Especially as he says at the beginning: Good luck defeating me. And I see no way of defeating him, it is a bit of a sadkek, pepehand.
I love your game though, real much, keep up the good work! :)