While running around the Field of the Dead, hacking down bosses to collect my achievements, I stumbled upon a boss called "Kala of the Shadow Vale", hanging around outside Kylikki's Crypt among the Gurnakhi. Even though I marked my map, I cannot seem to find her again - although I can vaguely recall she may have been in a slightly different place nearby, the second time I found her. Has anyone else encountered her, or knows any more about her. She may be a rare spawn or similar. Just curious :P