Uhhh, that's hard to answer... Let's see... The games dosen't tells the player anything so that's a something that you should improve one, second thing i explored a big chunk of the map and only found the orange rectangles and the green squares, and i explored a big chunk of the map, so next time you could make it smaller maybe?? next think i'd also say it's to not make the control physics based when you're making a platformer (or shift the focus more on the combat side)