They tricked me! I mean, I didn't fully expect a loss in the moment, but they definitely tried to make it seem that way. Though I guess you could see it as a way to convey the characters' emotions in the moment.
Also Tanjiro just impromptu using a new breathing technique, our boy is going to be unstoppable!
A big emphasis on the self-centeredness of demons in this episode. Hantengu is a real lowlife. It makes me wonder if being a demon causes them to become self-centered, if Muzan selects self-centered people to become demons, or if non-self-centered demons tend to just die out. I suspect we'll find out more about this when we meet the top-ranked demon below Muzan.
Also: do they really need to keep the village's location top-secret still? It seems like the demons have already figured out where it is located.