Continuity mistake: The scene where Artemisia is seeing Xerxes off into the desert for his transformation is a flipped shot, note the two moles on her forehead. (00:10:30)
Continuity mistake: A brave captive is dragged to Artemisia who is eating an apple. It alternates between being green or red throughout the scene. (00:21:35)
Continuity mistake: When Artemisia is fighting to the death near the end she switches between wearing fishnet tights and having bare legs.