Speaking of those big enemies—they're nothing new in and of themselves. Castlevania games have always had plenty of bosses and mini-bosses. With each enemy given a huge amount of health in Mirror of Fate, though, even slightly difficult ones tended to feel like mini-bosses.
But the real excitement came at the end of the demo, when I was confronted by a sort of spiky, blind executioner beast that stood head and shoulders above Trevor. Now this was a boss.