Yeah I agree completely, indeed quick jumping is necessary at that part.
About the jackhammer, maybe the scene overloads bc the scene itself is filled with scripts. Ofc I don't know what causes it, but maybe you should consider testing this in a "blank" scene w only the jackhammer and the barrels to see if it's really this mix that causes bugs.
And yo I didn't knew that different gbc models displayed different color shades, guess from now on, I'll only play these games at the emulator. If there is one thing I love in a game, is very saturated colors.
And yeah I guess that's basically it, thanks for the talk, keep making games, and at the meantime I'm awaiting your video