I sort of expect that any quest the player completes will result in additional XP and Fame- the items/spells you sometimes get are just extras.
With that expectation, completing the demonic Prisoner variant was surprising. My army received no additional XP and no additional fame. I just triumphed over a huge DEMON! As the player gets some fame for cleaning out wolf dens, this was jarring. (Tough crowd, I guess.)
Is it common for quests to not award fame/xp upon completion? Or is this an outlier, and perhaps a bug?