it sure IS fun, I just did wonder around for ages, actually thinking at first that I had explored everywhere before I finally realized the remaining place where the double jump was found. which was needed for me to advance.
yeah, it's a good metroidvania, no problem there.
but maybe a mini map )without and markers and stuff, just the blocks on it, so you can have a rough idea of the layout) would be useful.
yeah, you defnitely shouldnt give the player any direction where to find what, but a simple minimap that literally only shows the walls would be useful