Great implementation of the theme!
I was looking for a two-sided runner game for so long that I am glad I finally found one! Firstly, I want to say that I'm happy because you stuck with the geometric restrictions of the jam by using post-processing and shader effects to make your game stand out visually.
Considering the gameplay, I think the way you generate obstacles is not optimized since I have encountered obstacles that I need to avoid but also have a black top on them so I get a negative high score because I picked a black dot in order to survive. I think this breaks the experience a bit since the player can't control it. Apart from this issue, the gameplay was solid, and I really enjoyed it!
Solid entry, good job!