Nice! I had fun playing, but there are only 6 levels.
I gave visuals a 1 star because... There are basically none.
I gave audio a 2 star because there's no pitch shifting on the sfx and no music.
I gave seriousness a 2 star because there are only 6 levels. Not a very serious game if there isn't much game to play.
Everything else is a 4 star!