Thank you for taking your time to give detailed and useful feedback :)
All the sounds was kind of just chucked in there, and I didn't spend much time balancing the volume. In my "normal" games I do spend a lot of time, selecting and adjusting the volume. I'll prioritize it a bit more in the next jam :)
The difficulty... As you expected, the start time of the different elements are 100% randomized, and then there are a speedup over time. As simple a difficulty increase as it could be. Not perfect I know, it's kind of my fallback way of making my games harder and harder. Something I might have to work at.
Thanks a lot :)