"Crowley, behind me," the Soldier snaps, and that's all they take time to say before the next volley. Being attacked from the sides means spreading its arms, and taking the one on its metal hand's side in the face with another gunshot. The one on the flesh hand's side can take that opportunity to get teeth on the undefended arm, but the hound's reward for that will be the butt of a pistol to the side of the head once latched on, and then an attempt at literally flinging it away in the direction of the green-eyed one. The hounds may be strong and fast, but unless they're also heavier than they should be, lifting and launching something attached to one's arm is just physics.

The water is disregarded, for now. Besides, if Crowley actually obeys, it'll be the Soldier getting splashed, not the demon. "Holy water" won't do much to a mostly-human murder machine.