I absolutely love this kind of aesthetic and wish I had the brain to make something with this weird retro-psychedelic feeling. The concept is bizarre and unintuitive and I have no idea whats going on and I think that's exactly what you're going for, which is perfect.
I'm not sure if there's a win condition, I've tried many times and it seems to just be the same encounter on repeat? I've reached the third stage a few times but I tend to lose around there every time. While the core concept is neat it is definitely a bit repetitive so once the feelings of confusion passed and I understood my goal, the game became a little boring I suppose.
I don't like the hud, I'm not looking at it because it's in an awkward place and it's not even clear which meters are good and which are bad. I'm sure that's part of the design to some degree, but I feel this prototype works perfectly fine without the hud elements, the text prompts are enough.
I really can't stress how cool the aesthetic is and I'm looking forward to seeing where this goes.