Captain Kvasir told you that many members of Fenris Fangs are operating undercover around Asmodae and asked you to contact some of them. You contacted Riikaard, Herosir, Gellner, Natorp, Needham, Landsberg, Levinard and Lonergan and spoke with them. Afterwards, you went to see High Priest Balder to undergo the purification ritual. When you returned to Captain after completing all the tasks, he congratulated you and gave you the Fenris Fangs equipment.