Painful? Sure. Harmful? Kinda. But Hale's body was very used to the inedible and unnatural. Lethal? Not by a long shot.
The mud and streaming rain diluted the blood and softened it's bite. And hale let his mouth fill with the soothing heaven liquid at every chance.
He would outlast as he had outlasted everything. The vile blood was a nuisance, the biting was trouble, but Kami's refusal to just fucking die. That was what was getting to Hale. Raging in fury he was flung trough the air and into one of the few walls still standing. Not for long.
The blinded Kami was walking in his direction and tried to bite his leg. He got a vicious cut from Hales hind leg for it. The blood sprayed, Hale kicked up splashes of mud to counter it. He was starting to instinctively avoid the caustic vitae. In his beastly frame of mind he couldn't recognize how Kami relied on the acid in his blood. He just avoided pain. Neither did he recognize how Kami's tactic was now fully dependent on blood sucking. He just wanted nothing more than to smash it's face to pulp. The wall behind him crumbled under the weight of his rage, Hale took a hold of a large chunk and brutally smashed Kami's blind bloody face in. With mindless blunt force he rammed the crude rock into the vampires mouth over and over. Pulverizing it's teeth, shattering it's jawbone, ruining what was left of his spine. He kept smashing. Every impact less crush and more squish than the one before. When the rock was all but crumbled to dust he simply grabbed a second and continued his hatred fueled mutilation.

Hit after hit, one louder than the other. There was no way of telling if the twitches on the creature he was brutalizing were reaction or simply from impact. Now completely covered in dark red mud and gore, Kami's form was far from recognizable. Under the weight of rhythmic ruin and under the effect of Hale's presence, the caverns below them finally gave in. With cracking sound the ground split apart underneath them. Hale kicked Kami down and pushed the crumbled stone wall down the hole after it. [color=ed1c24]"Fuckin' Shtay death!"[/color] Hale spat with broken teeth.