In the current setup, the game uses WASD for movement and the arrow keys for shooting bullets.
For me, it's a bit difficult to manage both at the same time. I think it would be simpler if the game used the arrow keys for movement. Then, when the other key (let's say 'X' for now) is held down, pressing the arrow keys would launch bullets in the direction of the arrow pressed. This would make the controls easier and more intuitive for me.
Was I able to explain it well now?