Fun, interesting, creative. A few others have noted it's a bit hard to play by yourself, but I suppose that's where the challenge lies. (I'm imagining Small Ant playing this with his feet for some reason.)
I think one thing that might have made it more accessible would be to have the option to use dual joystick controls on a gamepad instead of WASD and arrows - or even a mouse. I'm guessing you made this in Unity, in which case the new Input System should render that a simple addition.