Well, quite frankly I thought it was odd thatI don't think I'll be doing an Advanced mode playthrough for Portal Stories: Mel anytime soon. Not many games these days that I play back to back.
a lot of the puzzles were unchanged from regular mode, but a few of the ones that are were pretty tough. Overall it was easier than I expected, but still kicking myself for not seeing the obvious on the one puzzle I got help on. In my defense though, it was right after the smoke from the west coast forest fires was getting pretty thick and the combination of breathing a lot of that and staying up too late a few nights had me feeling strange.
I'm now playing through Portal 1, and am finding it doesn't support 4K nearly as well. It can run at 4K, but the menu is so tiny it's unusable.