>>11848660
>>11848680
>>11848683
Oh and I just remembered a fun fact: there is another level later on in which you have to use the rope. IIRC it's in the airport world, just before the area with the spiked walls that close-in on the player.
What I just said about the rope "artificially" scrolling the screen which results in objects not spawning? Turns out that in this level there are 2 enemies that are supposed to spawn but don't due to that (though they probably do if the player backtracks and come back but he has no reasons to do that at that point). In my hack they did spawn however.