Getting really frustrating. All I need to do is get my Madsacre Medals for my Reckoner title and it's impossible. Killed the 50 HVT but only 3 medals. Using Hunter arcstrider and Radien. I've killed entire waves in under 20 seconds. Gor sure no gap longer than 3 seconds. Drifter makes his comments "did you wake up angry" etc and no medals. Bungie please help!