Linux port is on hold for the time being due to some issues after launch, more info here: http://steamcommunity.com/games/397680/announcements/detail/924743391264810445
Soon, the beta for the Linux port of FIREFIGHT RELOADED will be released soon to the public.
Be sure to report bugs in the discussions:
http://steamcommunity.com/app/397680/discussions
Along with this, I also added the dedicated server as a tool, so you can now host dedicated servers without opening random folders now!