No idea how I managed to do it and haven’t replicated it since, but I managed to jump off the wall after the second dashpad-boosted run in a way that somehow allowed me to straight up defy gravity. (I seemingly couldn’t come back down afterwards? But I didn’t wait around long enough to confirm that.) I could kinda control direction, but it started to gain momentum towards the right and going left became impossible, and pressing left just slowed it down somewhat. Even saw a random Pocat(?) along the way.
The swimmable water is also basically invisible to me for some reason (I can only see the very edge of the water), but that might just be my crappy computer, lol.
Otherwise, pretty good experience. Took me a while to get a hang of the timing to use the grapple, but it was smooth sailing after that.