Tip: If you give a Muncher tile custom graphics, it will still act like a coin when a silver P-switch is active, whether it looks like a coin or not. So make sure to use ExAnimation if there's a silver P-switch in the area.
This hack isn't very good - two of the levels feel structually very similar, and one has a midway point that will kill you if you don't start climbing immediately. Another level has a midway point that's seconds away from the goal post. The castle is an anticlimax to this short hack, with almost no content before the boss, and much easier than the levels just before it. There's an overabundance of coins, and some areas where clusters of enemies will just swarm or chuck things at you. By no means a pinnacle of creativity and delicate craftsmanship. Total length is about 8 minutes.