Thank you so much for taking the time to write that all out! I did make the music, and the way you beat level 5 was the intended way, but level 4 was kind of cheated, but great job figuring that out. And as you said, there were some inconsistencies with the physics, and I could probably rework the rewinding to fix that. Thanks for playing!
No worries, someone used this format to give me feedback and I found it really helpful so I've been using it too :D
I noticed you've used bosca ceoil to make the music and if you don't mind I'd love to know what instruments you used. I used bosca ceoil too and I really liked the sound of the instruments in your music. I've just been using basic saw and square waves in the chiptune section.