Criticism - The difference between the highlighted and unhighlighted walls was very minimal, making it hard to tell them apart. To fix this maybe you could make the highlighted ones a different color. Also, the importance of not having many bounces didn't come into play that much for me as I got more at every flag and completed most levels in a small amount of bounces.
Support - The visual style is very nice, I liked the post processing. The concept is also very innovative, I just think it would need a bit more tweaking to make the theme feel more relevant to the gameplay. I also liked that you could turn on and off walls mid play which allowed for more fun paths.