A great idea exceptionally well executed. A bit too difficult. I could only just get past the first boss and didn't beat it. Checkpoints at the end of each level and health pickups might help.
Thank you! I agree it turned out more difficult than we wanted, had we had more time we would've balanced it out. HP pickups was going to be a thing but because we were running out we decided to move the base HP from 5 hitpoints to 7