Yeah, the original concept was for the gameplay center around running around the city, as much more capable enemies tried to chase the player, and the player would shoot them down during their chase.
The upgrades also ended up being a subproduct of my poor management (ironic), as I wanted more mechanical upgrades over the stat upgrades I ened up with.
In retrospect, as much as I also enjoy the BalaArma I have now, I can't deny it was a major subproduct of my choice of changing my gameplay loop midway through the jam.
But, all in all, thanks for enjoying my game! It means a lot for me!