I did some runs, my best score was 42300. I had the most success primarly using the rocket launcher and switching to the shotgun on occasion.
The game is fun. It looks pretty good, I really like the animations of the different sprites. I think they're part of why the game is punchy and so are the appropriate speeds of characters and bullets and the sound effects. I love the bullet missing mechanic, the shotgun is pretty effective but I try to be extra cautious not to miss with this one as the new enemy is often a problem in this case. The difficulty is perfect and especially it gets interesting soon enough during a run, there's no dead time.
That's a very cool entry, thanks for sharing.