Excellent feedback. Thank you so much for taking the time to share this. You're right about the overall volume. I think I was scared off because on my last jam game I only had a single track and I had it way too loud.
With the time to reflect away from the game, I could have made a more engaging challenge by tweaking the enemy spawns and making it so that you lost the power-ups over time, but they kept spawning back in randomly, so you'd always be on the lookout and have to make a conscious decision to either take out the zookeeper or get past them to make it to the banana power up.
Congrats on the current world record score! Thanks for sharing, even if you knocked poor ol' Luigi! Cheap shot. He can jump higher!! Even if he is a doofus.