I wish I could give this game a 6 out of 5 for presentation. It felt super polished from the very moment I launched it. The animations, transitions, audio and attention to detail were absolutely top-notch.
The gameplay was pretty good too, though, the upgrades didn't feel too impactful, enemy variety and scaling throughout stages was quite underwhelming. And I have a few issues with weapon balance - it feels like the railgun is the only viable starting option, others deal next to no damage and/or hard to control.
The settings menu didn't save the volume settings for some reason - though they still worked, so it wasn't an issue really
Good job!