Thanks for the great feedback!
Yes, I noticed that the levels felt a little flat in the end. I guess with the jam's time constraints I couldn't deliver much variety in time. The generation based on audio and specially the importing musics parts kind of drained almost all of my time, but were stuff I really wanted to do more than anything else.
Hopefully with my spare time I can work on some improvements and have a bit more variety to each level and to the gameplay overall. I plan to add more enemies, environment, and also a simple health and energy system. I think it will be better in the end.
Will make sure to watch your streaming as well!