Wow, I actually beat the first level... It took me quite a few tries; those enemies are tough. I ended up having to keep them on the edge of my screen or just off-screen and catch them with the rocket launcher. My aim and the required uptime with the MG made that method more challenging, and my performance with the shotgun was positively dismal lol. Part of the challenge with was that discovering an enemy often started off with taking a few shots before they were on my screen.
I'm super impressed that you created an online version of this within a jam timeframe. That takes some know-how you don't often see in this context. On the SFX - the frequency distribution seemed a little harsh on my ears, so I turned my volume down a bit. Overall, nicely done!