Hey there Dr. Heinz.
9- This is a single downpogo.
11- Standing on the white barrier is a genuine mistake, and I put a teleport to prevent people skipping this level but it was not large enough, a friend found this strategy and I've decided that it's a pseudo speedrun strat (is that too cheesy?)
15- This was something I was concerned with on the speedshot stage, however I hoped that after the first few attempts players would realise they can stand on this and that's it's a speedshot. I didn't change the texture since it's the only speedshot on the map, so in my eyes it doesn't make a difference.
Thank you for the feedback!