Doesn't this violate "Everything must be (at least visually) 'clean'. No messy mapping that jarrs the players' movements or makes them constantly get stuck in the ground."
Also in order to beat that level one would need to have a pretty comprehensive understanding of the glitches in cave story, something not all people will have.
In fact, I believe it is not an infraction if it's done on purpose.
And I don't plan to put any challenge that would involve knowledge of the game glitches.
I actually asked DoubleThink if my idea was ok and he said yes, kinda. So...
But if it's not possible then I'll make something else, no hard feelings.