The idea behind it all is to imagine yourself on a circuit. The enemies appear in very similar areas and the layout never changes. You run as fast as you can shooting at the various targets, aiming at their head whenever possible until you reach the end. This is the whole concept and although there are variations on the theme, this is basically The Club in a nutshell. It is not all run and gun as there are a few sections where you are forced to stay within a pre-defined area and shoot the onslaught of enemies heading right towards you.