A repository for ServerExtension by Marco found here https://forums.tripwireinteractive.com/forum/killing-floor-2/killing-floor-2-modifications/general-modding-discussion-ad/beta-mod-releases/109463-mutator-server-extension-mod
A repository for ServerExtension by Marco found here https://forums.tripwireinteractive.com/forum/killing-floor-2/killing-floor-2-modifications/general-modding-discussion-ad/beta-mod-releases/109463-mutator-server-extension-mod