Yo! This is a really cool concept, and I genuinely had fun playing it. My main issue was the difficulty scaling. It ramps up too quickly, so it starts feeling overwhelming rather than progressively challenging.
I think this could become a great little arcade game with some more variety. You could add different locations, multiple layouts of the same location, additional enemy types, or special projectiles. For example, a bullet that ricochets between enemies and deals extra damage with every bounce. Multiplayer could also be an interesting long-term direction if it fits your vision.
Based on the core idea alone, I think it is worth rebuilding. It mostly needs a smoother difficulty curve and more content to keep each run feeling fresh.