ShockingAlberto
Member
My strategy for Volga is to mash Y attacks while he guards--usually after 3 or 4 hits, he'll hop up, shove his spear into the ground, and reveal a weak point. If you can get used to recognizing when he's going to do that hop (he'll stop guarding and briefly hoist the spear), you can reliably dodge left or right and bust up his weak point.
His dragon transformation also leaves him open for longer and it's not hard to figure out the spacing on it.