Perfect Harmony is more Contra than Mega Man. Endless barrage of enemies, horrible stage design and the marks of lackluster research leaves me horrified. It’s a game that was developed for four players and never balanced for single player. That to me is a serious offense.
The game has been in Beta for almost a decade and seemingly the development has stopped. I wasn’t able to make it to a single robot master due to the unbalanced gameplay. Not all of the bosses are there either: They were never finished. Some original ideas can be seen, but they are all covered in liquid filth. Do yourself a favor and play Contra or 2.5D with your friends instead.