I can't stop laughing after hearing that music hahaha
Great idea, thematic, responsive and replayable with the score at the end.
Maybe it's just me but I felt like the grid based movement contrasted to the smooth movement of the bullets. My brain makes me think the bullets and the men would be turn based because of it (everything moves one place every time you move) but honestly that would be quite a strain tactically... so I think this way is more fun. Just ignore me then - I got used to it after a few tries!