Aestetically game is good, graphics is on top level, manu have a lot of places to go and it has everything, from gallery to control mapping. Music selection is obviously limited and comes from circles or previous jam game, which is acceptable, I guess. Story ties into background and gameplay which is a plus.
But rhythm game part is unpolished, it favours late presses, so Bad late press would not result in losing life, but Bad (or even better than bad) early press - will, because of physics of thrown objects. Honestly throwing objects was not necessary to be physics based, they could be Tweens, but I guess it's what could make game special from taiko clones. Then as items drop into cauldron - they make chime, often chaotic and preventing from listening to music, better to not have any sound as item is consumed. Speaking of taiko clones, usually accepted control is X, C - red; Z, V - blue - for ease of pressing quick combos, but guess since there even biggest difficulty limits itself at 2 quick presses - it may be fine, but would be better to be in fit with others.
Also we spent quite a lot of time to figure out game not working which turned out locale problem, but that's more question to Unity because WTF and it never happened before. Game needs US locale