

The game definitely wants you to be aggressive, but you can sometimes just run around to think for a few seconds. I do it sometimes to wait for my chainsaw cooldown to finish, because I need ammo. Or shoot an Imp in the face for a Glory Kill. These animations also give you some extra time to decide your next step. Enemies usually don’t continuously spawn, until the arena is just packed. There are always exceptions of course, like Totems or Archviles, but they aren’t super common.
Host your own TeamSpeak server.
The client is getting occasional beta release, but nothing for the server in years, although stuff is apparently being worked on. It seems they want to make it function more like Discord.