IIRC they aren't bosses really. Just named mob's standing around with other mobs and I believe you encounter them quite early. Around a campfire I think, another by a ramp. Have you killed every mob near the beginning?
Yes. We killed every boss in the dungeon including the centurion but the map shows we need to still go back to that first area to kill the first boss.
Can anybody who successfully completed the dungeon explain their experiences?
UPDATE: fourth group seemed to be the charm. I think I had to go through the right dialogue option with the elf at the beginning for the taskmasters to spawn. Halfway through I actually spoke to a character about a deed which I missed before because I tried to stay with my group who kept hurrying ahead.
Edited by bluejster12 on September 3, 2015 10:54PM