Thanks for playing! It's funny- one of my biggest pet peeves in games is when the audio is so incredibly loud that the first thing I do when I boot it up is go into the settings and turn the master volume down by like 80%. I think because of that I end up mixing the games I make to be quieter than maybe I should...
I'm glad to hear that you went back and got gold medals on all the levels, but yeah, I've seen more than one person comment that they got stuck on one or two of them. I think having a setting that let you loosen the time restriction on levels would have been an easy solution that would have let people see more of the content without struggling as much.
That being said- during these game jams I always wonder whether people would actually use any provided difficulty settings over just moving on to the next game. But if it's pretty low effort to implement I don't really think that matters much.