Kalthar Wolf-Brother – EP Templar - 50 Maeli Valen - EP NB - 50Naps-During-Trials – EP Templar - 50Rulnakh - EP Sorc - 50Azrael Krieg - EP NB – 50Uvithasa Telvanni – EP DK – 50More-Tail - EP Warden - 50Narile Galen - EP Sorc - 50Bone Soldier - EP Necro - 50Naps-During-Trails - EP Necro - 50
Apologies for necromancing this, but I had the same experience so I'm wondering if it's bugged in some way? I tried it at least half a dozen times, but as soon as he'd taken a significant amount of damage I instadied; even switching to healer mode and spamming Illustrious Healing, Rapid Regeneration, and Twilight Matriarch between attacks didn't help -- I'd be at full health, slowly wearing him down, and then bam: dead.
Logged out, had a coffee and a cigarette to regain my patience, tried it again and killed him easily.