This games gave me some big Cuphead vibes before Cuphead was a thing. The music and story are both good, and it'd be great to see this get an update sometime, thought it's probably way too late by now lol. For boss ideas, Tengu Man, Air Man, and the other wind based robot masters would be cool to see as the rush of bosses before Wily himself. Would be cool to see Eddie eventually get some power-ups and health pickups too. This can make for a really good game with some more work put into it.