After getting used to the combat of this seventh gen iteration to the series and descending down to a low circle of Hell, you find Scarlet, the Other Hill version of the Doctor's dead daughter and is quite an unfair kick in the balls as she stands as Homecoming's difficulty spike.
Her first form gets pretty simple once mastered due to animation cues, but her second is straight-up infuriating as she becomes much faster, more unpredictable and her one point of vulnerability is had when she's invisible. You'll have a tough time with her to say the least.