This is one of the funnest zones played through so far. It starts at Knuckles spot. I have the bonus jump ability from lightening shield to get over some high parts Knuckles is supposed to climb. I like Knuckles area in Carnival Night. I like those zones somehow, like Casino Night Zone in Sonic 2.
I found that other video of Knuckles direction in Marble Garden Zone. You gotta use debug to get to the area near the end of Zone 2 to access Knuckles route. It only goes so far and there is no boss. Still it was fun to do.
So I started figuring out how to make a hack of Sonic 3 and Knuckles!! I'm starting to work on it. Took me hours to figure out how to do it. Started on the first act in Angel Island. I want to edit the entire game! It's fun so far. Glitches out from what I do to it so have to re-edit and test. Still it's fun. I want to work on it today and perhaps post a hack version of that first zone!!
I also make music!
Here are my links - https://massesect.bandcamp.com