Way to make this unplayable on a laptop.
The mouse? Really? For only eight-directional shooting? Can't we change the controls so that you can use WASD for moving and, I don't know, IJKL for firing? Numpad? Something? Even if you had to have separate controls for rotation rather than directionality of firing, that'd be better than the damned mouse. Exception being that if you gave the shots more precise control, if the shots went exactly in the direction of the cursor, that'd be a situation where the mouse would be a better choice.