I see what you did there by only requiring one hand to play. Maybe add mouse support as well? Left click horizontal, right click vertical or something? I understand how to play but I guess the dopamine hit is supposed to come from the scenes you get and not the gameplay itself? It just doesn't feel very rewarding in it's current state. The sounds for hitting the wall being louder than hitting the enemies feels odd as well. I do like how there is an animation for enemies to transition from being hit to their next spawn location instead of disappearing and reappearing.