Awakening Quest 2 (Arcturus) has wrong information for the English/US display.
"Arcturus must defeat Polaris in the Prophecy Pool 2 times on Expert or Extreme difficulty."
Expert does not count towards quest completion. Heroic does.
Also, it is a bit odd that for this one, the player must do it on one of two difficulties unlike most other heros that completion is done via "difficulty level _______ or higher".
*sigh* now to wait several days for Polaris to come back again. So much for starting up another hero today.