One-off notes as I was playing:
- Really cool to finally get to play this game after seeing it in the /v/ threads for so long.
- Music is really catchy. Reminds me of Freedom Planet.
- Graphics look exceptional. Though I'm sure you've gotten enough praise about it already.
- I felt Z and X should be swapped for shooting and jumping but eventually got used to it.
- Background needs to be darkened or something. The pixel art is great but it's so detailed that sometimes it feels overwhelming on the eyes.
- When the boss grabs you with their tongue I feel like there should be a moment of pause once they catch you to sell the impact. Right now it feels like I'll be moving around and then suddenly be pulled away without much transition.
- Why does pressing the space button shake the camera?
- If you run towards the edge of the screen the sprite will jitter. It only happens so long as you're running towards it though so I doubt many players will notice.
- Got visual artifacting on my screen as well. Have 1080p display monitor.

Overall thoughts:
Just from a aesthetics standpoint this game gives insane GMI vibes. I don't have many major complaints so I think you have something good cooking so far. You should try to get this into SAGE expo at some point if you can. Would definitely be up their alley. I'll keep an eye on this one.