Great work, I especially love the theming and the overworld design in this hack. Just keep in mind that detailed visuals can be distracting for kaizo levels - I had some small issues with this in some of the later levels. I recommend having a bigger contrast between background and foreground there, and in some levels (the factory level with the bats especially) I constantly hesitated because some of the background tiles look solid when they're not. The swamp level was a bit blind due to the speed of the platform - I recommend having some more indicators there. Overall the gimmicks and level design are very neat. Keep it up!
This demo is absolutely fantastic. Of course there are 2 or 3 sections that are a bit wacky. But every section in this hack has a consistent strategy which is why I loved it so much. Keep up the good work for the final release.