Alright, just played more of the hack. I completed three more worlds, so now I am on world six. I'll start out with a couple of complaints.
First off, the world three boss, is it beatable or something, because when the boss turns to stone, nothing happens. I spin jump on it and while it does show some cracks, nothing else happens is there something else I need to do?
For the level Jewel Jubilation, some of the foreground objects and background objects kind of blend in with each other like
this and makes some sections annoying to do since it is hard to tell at first what's solid and what's not. I would suggest making the background objects a bit darker.
That's pretty much it as far as complaints are concerned. My opinion on this hack still stands despite the issues I have. Also, I haven't talked about this, but man, do I love music. I think some of my favorites would have to be Factory Fugue, Overburn, Celestial Citadel, and some of the track in world three. (Sorry, I don't remember what they are called.)