Mutation or vscript mods can do it. The easier way would be using some event functions like "player_spawn" to check the survivor's spawn location, & use "Entities.FindByClassnameWithin" to check if there's "info_landmark" or saferoom door near where the survivor spawns. Then, check the "weapon_" classnames in that area other than medkits, pistols & throwables. If there are those weapons (smgs & shotguns), use "Kill" to remove those weapons.