Hello DragonAI42! I apologize that we aren't sure how to implement multiple key bindings but, in the options menu, if you click on controls, you can remap the keys to whatever suits you best. You click on the key you want to rebind and then press the new key you want the action to bind to. The only control that we were not able to figure out how to rebind is shoot with the left mouse button.
Please let us know if you were able to rebind the controls to your preference. If there is a problem we will look to fix it. Thank You!