Man, this is a really good entry. It nails the theme, and has really unique and fun gameplay to back it up! I love how there's no arbitrary cap to how fast you can shoot, since shooting is equally as damaging to you as it is beneficial for defeating enemies and figuring out what the environment looks like.
Part of me wishes either the bullets moved a tiny bit slower, or the camera was zoomed out a bit, so that dodging my own bullets would be easier. However, I was probably hitting myself too much because I was spam shooting a lot, haha.