Plutonium

The settings are saved in DVars, so you need to set these in the batch when launching your dedicated server. gamemode_index 0-2 (Normal, One Room, Gun Game) bossZombie 0-1 difficulty 0-1 (Original, Easy) timedGameplay 0-1 startingRound 1, 5, 10, 15, 20 (only when timed gameplay is off)

it requires a webserver and or wamp setup in order to use fast dl properly pretty much like this but of course adapt it for waw but as stated you either need a webserver or have a proper setup of wamp https://www.youtube.com/watch?v=inirsIk9P4Y&t=2s