Hell Let Loose: Vietnam director says games need "friction" to thrive, and this shooter is proof

The scariest noises in Hell Let Loose: Vietnam are the quietest. The dry-rattle of gunfire is too constant, and helicopters' telltale thwup-thwup gives plenty of warning before dropping fresh troops. Maps are big, so sound is one of the best tools for gauging the flow and geography of a match. When…