Yeah I can echo a weird bug where clicking prevents any movement (annoying because this also happens for the Fullscreen button). There will be some kind of mouse filtering that is being triggered there, as a guess.
It was hard for me to play on my resolution without fullscreening, but the game was still interesting! I echo others that I personally dislike the controls. My general rule of thumb (not really backed up by any references) is that WASD is fair game, obviously, and Q, E and R are within reasonable reach of those, but anything on the bottom row of the keyboard shouldn't be used for ACTIVE gameplay (i.e. if you are using them to open a menu or hotkey something, then fine, but having them as active parts of the game is difficult. As I say, though, just some advice for how I make control schemes, and not based on any other "best practices" or anything.
As for other parts of the game, I liked the simple and effective music loop, but it definitely can get old quickly. The tone of the music is perfect with the art aesthetic. Great work!