i watched the video. Found a lot of things that are not clear to the player. for example the learning menu hidden in the pause is a bad idea
There's definetely some areas that can be improved for the ease of the player. Maybe a controls scheme pops up when you press start so the player can review it and then get started. Or a small tutorial mission before the real battles begin. These make it easier for the player. It took me a little, as you saw, to realize that gold meant an area.
Still very good. Would love to see how you build on it