I've been trying to get the Darkblade helm for forever, do I need to play it on heroic for a chance to get it, or can I do it over and over on normal/easy difficulty through the icon for it on the dreadnaught. Please tell me if you got it and if it was on normal or heroic (or nightfall). Also, please don't guess, I really want definite answers from people who got and know exactly how they did. Thanks!