Hi, Need 1 Guardian to help me complete a Vanguard Challenge. It will take less than 10 mins to complete. I received an email from the Vanguard(Bungie).. The challenge was complete any Heroic Story Mission and be rewarded with 1xEtheric Light. The challenge ends 23:59 on 23 Aug 2015 (PST). Etheric Light reward will be issued on or after 25 Aug 2015.(Stated in the email).... I assume all members of the fireteam will receive the reward. I'm on PS4 and my PSN is Tazz84k..