Q and E to switch weapons
Really I always hate it when the number keys are the only way to switch weapons. When you are in active combat it is not easy to find the correct number key cause you don't really want to glance away from the screen. It is so much easy to be able to use the q and e keys to shift to the next and previous weapons, especially when all you want is the next gun. Also i didn't care for the restrictive movement when inside the house