CONTAINS SPOILERS
Zombies? Hellhounds? I can fix it!
If you're having a hard time with HellHounds in the map Keno Der Toten, just use this glitch in Keno Der Toten, by crouching on the planks on the stage leading to the Viewing Theatre, and they won't see you, therefore, won't kill you. Pro tip from Kory Zervas. As for the zomb-o bastards, if you have Jugger-Nog, but unable to get away, just try to use M O N K E H S .