I finished the game. The navigation was not fun at the end. I agree with the doors/teleporters comments. Also, I think those purple block one-way parts should be replace by something you can unlock rather than use once.
I didn't know how to get past the spike/ball/fire section without just getting hit by the balls and continuing up.
Thank you for making satisfying story and dialogue. I was worried it was just going to be a throwaway gag but it ended up being kinda sweet.