This hack is reminiscent of Revenge of MetaKnight, a subgame of Kirby Super Star - as you play through the hack, you'll notice a striking similarity in concept and progression.
However, this is nowhere near as entertaining. In fact, it's very frustrating. The main thing dragging this hack down is the confusion caused by inconsistency of object behavior and the palettes being so monochromatic and not differentiating between things that could be mistaken for a platform and things that are actually platforms. Doors are entered at weird positions. Vertical chains can't be climbed, but horizontal ones can. Nets can't be climbed, and they have a dark outline. Later parts of the hack have the element of luck: fire will rain down on you, and there's a flying area with a bullet generator (which you can fly above, but imagine if you were forced through the spawning area?)
Level design here feels very randomly thrown together - much of the ideas put into this hack is the "where" rather than how it plays. You get rooms early on that you can easily avoid all the action by staying along the highest platforms of the level, and then inside the castle feels really cramped and has nooks and crannies with coins and stuff. The credits are kind of cute.
It's kind of annoying how the music and timer reset every room, and how there's a timer on cutscenes.
The cutscene presentation is awful - it's a full screen of very widely spaced text, and only character names are compact. It's not easy to read as a result, and the way it's thrown at you is a deterrent. They slow down the flow of gameplay and feel rather unnecessary. The game this was inspired from had character dialogue during the level too, but much of it didn't pause the action.
All in all, a big disappointment. It has a cool progression in events but the level itself is bland.