How does the church know about him? Cainhurst and the church kinda are mortal ennemies, no?
Well, to be accurate, we don't really
know that he's the artificial hunter. We know that the artificial hunter was released, and that the Bloody Crow started knocking on our door. It's actually a fair possibility that the two are unrelated.
Besides which, just because he's the Bloody Crow of Cainhurst, that doesn't necessarily prove that he's a Vileblood or their servant. He might have been one of Logarius's Executioners who did a particularly good string of slaughtering at the castle, and this earned the title.
So, from the perspective of a poor schmuck that can't afford a PS4... Can we, or can we not take on this guy?
...Maybe.
A very decisive maybe.
He's quick, possibly even quicker then us - he has a teleport spam all of his own (either in the form of the Old Hunter's Bone flash step, or depending on how cruel Tricia is feeling, perhaps even the Art of the Quickening itself), and his pistol is capable of ganking even hardened hunters.
Our best bet would be forcing him into a battle of attrition: The Chikage is a good hunter v hunter weapon, but its Trick form drains health. If we can force him to enter that mode, we can potentially drag out the fight (thanks to Helena's Nail) long enough that he takes himself down. Of course, that strategy goes out the window if he's packing a bushel's worth of blood vials.
Djura, Steffon, and the Church hunters would just be chaff here, frankly, so it's best that they leave with the clergy.