Love the over all vibes and art work, you did a great job! As someone who also did a very challenging platformer type game, I thought the movement was great! Seemed intentionally unwieldy in a good way I think :) However, I couldn't figure out how to get up the first spiky wall section! I don't seem to have enough bullets to get the high up, and it only reloads on the ground - am I doing something wrong? I'd love to keep going and play more :)
Last thing was I didn't see much in terms of the theme Waves, but maybe that's because I didn't get very far...