There are three things to do while playing other then talking, some can done at the same time.
Decide on some sort of measure and stick with dramatic distances. Let player knife a clot 2 meters away, let them out run dashing gorefasts if its dramatic enough. Even you are going use a large gird map, brutalize anyone that mentions minis.
All the fun is here! Combats should vary from shooting fish in a barrel and "Holy shit there are five of us and we can't find and kill a single crawler.". Shooting, hacking specimen in half, reloading, interrputing, getting interrupted, losing an arm... see this list for details.
A sub section named after the section itself? This will cover everything else movement and combat does not.