The game was good, and I really enjoyed it. It felt like an authentic arcade experience down to the possibility of a second player with a flashing push start button.
I did have some trouble seeing what's going on because of how hectic the screen can get. Some way to easily identify the player would be really nice.
Shooting felt satisfying. However I was not a fan of the sewer area. It lasted way way waaaaaay too long and to top it off your reward is a "good job" and get sent back to the title. At least say "end of demo", lol.
Overall I enjoyed this and I look forward to seeing your progress posts.