I got super annoyed at the constant gun sfx blaring into my ears. Couldn't really tell if the explosions felt fine or just did not make it worse.
And that one, last enemy that seemed to be hiding every single round always turned this from a shoot-em-up into hide-and-seek for a bit.
But other than that it was really good! I still had a lot of fun showering hordes of enemies with grenades. Not sure which of concept, art style, and music was my favorite part.