While the accurate numerical value was not privy to anyone but Henry, it was clear to everyone on the scene that this was an enemy for Boyle to face.
Henry seemed especially faced with this fact after the System informed him that, just like Boyle, the Orc priest was unkillable. His analyzing of the Orc priest took three seconds at most but it was more than enough for an Orc warrior on the ground to seek to take advantage by tossing its Ax at him in a powerful throw that was almost too destined to knock Henry off the tree while splitting his head in two.
Henry's perception caught the Ax the moment it touched within the field he had spread out. He leaned to the side to avoid it so that it spun away with the blade an inch or so from his face. Without righting his body on the tree branch? Henry pointed 'Cudgel' to kill his Orc attacker.