Make a check box on the mission selection screen to turn friendly fire off, so you can't shot or slash through people without killing them, when checked the server will only look for others with it also checked to group you with, in this mode the payout is tripled (so even on normal difficulty you get around the same if not more than a standard elite run) for mats, crowns and heat (there is also a 1/5000 chance for any drop to be replace with pet food or related item) and players can't revive once dead, dead players will lose ~75% of all collected crowns, heat, mats and pet food.(so the risk becomes higher the longer it's played)