I saw the fundamentals interesting; I backpedaled the whole time, because that made it easier to attack the zombies!
- If I travel forward, the zombies catch up to me from behind, and slaughter me ruthlessly; that leads me to backpedal the whole time so I make it easier to shoot the zombies.
- Different style of movement; I traveled backwards the whole time, because the zombies will follow me, and catch up to me, and I need to shoot them somehow.
- Have the mouse determine the player's facing direction, so that aiming for the zombies is easier. (Maybe not this exactly, for it takes away some of the challenging gameplay).