Without spoilers will be tough, but I'll try: I liked that last part. I got lost there, but I liked the mechanics in the red walls. The jumping inertia was fine, but as I said in my other comment, it was a little weird. I think that lacks a little polish, it seems that some flickering were happening, but I couldn't tell exactly what is lacking. Maybe pushing the player off the wall when he jumps would have made it better. The math puzzle was ok, I found the answer in my first path (lucky, I guess). Overall, it was a little confusing, but maybe that was the objective, I wasn't bothered by it.