Upon completion, you will be given the Oni Genji portrait, the Oni Genji spray in Overwatch along with the Oni Genji and Zarya Portraits in Heroes of the Storm. What you have to do is simply play Heroes of the Storm on PC and complete 15 games with one friend or more. This challenge is going to allow players a chance to get a unique skin for Genji in Overwatch and Heroes of the Storm. In case you missed the announcements, there was one big Nexus Challenge announcement which is set to go live this week on November 15. Back at BlizzCon 2016, Blizzard made some different announcements for all of their games including Overwatch, Warcraft, Heroes of the Storm and more.