We REALLY appreciate the feedback!
We wanted to make the game have some sort of level selection, but we just didn't have time. Thus, we had to opt for the endless-style gameplay, which coincided with our initial idea of including a story. We had to scrap an entirely new area with a unique green and purple tilemap because of this!
I do love your suggestions for making the gameplay easier - I feel like there was definitely some developer bias with the levels seeming easier to us than they really were. If we decide to further refine this project, I 100% agree with removing wall collision damage and increasing the player sight radius.
Once again, thanks for your detailed response! Seeing stuff like this really helps to affirm our future plans.