Wow, thanks for the super positive review, these kinds of reviews are why I keep doing jams. I remember leaving similar reviews when I was newer at game jams so this feels like a full circle moment, and I'm sure you can do the same!
For the difficult coin we were hoping having 2 coins in that room would show it wasn't a necessary coin but I guess that didn't work. The way to get the coin is to do something like the hyperdash in Celeste as you go faster when you're swinging down in this game so you can release the jump while going down and jump to be able to save more speed.
Thanks again for the review!