It's define in the Xmpp channel Which in your case seem to be named arena. In theory if your server is set up properly you should be able to use gajim or any xmpp client to connect.
You just have to make two shortcuts with -writableRoot.
The logs and config will be in two different folders.
It also allows you to have it on a usb key.
Hey @Mordred
Thanks for your interest in translating and reviewing the Ukrainian translation of the game. I've made your reviewer. You should now be able to review strings.
Thank you for helping translating the game!
What do you want to achieve exactly, the game uses P2P lockstep (as in everyone computes everything), but it has only one CNetServer to reduce the need for everyone to have open ports.
Ships like towers use a different method to shoot multiple projectiles. Unfortunately that means you can't control the fire. @Freagarach was working on it at some point.