Your game is really polished, and judging by the version number of the demo, I can tell you've put a lot of work into it. I have trouble multitasking WASD and the mouse, I might be the kind of uber casual mentioned below 😅 It was way easier with a controller though, I'm glad you added that option.
I agree that there's not much more to say in terms of feedback at this stage of development, but this is awesome work!