The map is already a "little" humansided, if they rush the nuke many zombies die always. Most times only one headshot is enough and a zombie falls down and is dead. With snipers and autosnipers its very easy to do that, so please let restrict them on mountain escape. I see now already many players with sniper in a few days probably almost all are buying them. Its more fun if they have a better chance to climb up. Its still easy to shoot them down with any other weapon but at least you have to be somewhat in a range instead of 500m away.