I should have something witty to put here (even if it's just to update dated info), shouldn't I?
HERE is something that done in ~2-3 hours much earlier today but I don't submit contest entries until closer to the deadline due to a competitive mentality I get during them. This will be very lucky to even crack the top 10, though if it breaks Top 5 I'll be goddamn surprised with myself. Assuming of course, it doesn't get disqualified for some oversight. Since you said only the level will be judged, I will hold you up to that and did nothing with the title screen (it's possible to die, but it takes about seven seconds for that to happen; meaning you have to be slow as molasses) or the overworld.
The base I used for this was my main romhack project, which explains all of the non-choco stuff and the complete lack of a Spin Jump, along with some other mechanics. The more essential stuff is explained in the level itself already.
I should have used more time on this level but I need to go to sleep. This level is probably a bit longer than it should have been. Also, I have finally submitted something to this site that wasn't just a palettes or random screenshots of my levels.