Before Arthur emerged from the cave he would be met with a solid wall of black flaming spikes that materialized, but were hidden by the flames. Adrian had summoned this wall with of spikes the minute the flames had hidden the mouth of the cave, and they were able to pierce tank armor. At the rate Arthur was moving he was in deep shit if he collided with it. Should that happen the spikes would travel through him with ease. However Adrian did not underestimate this opponent and was waiting with mace at the ready to intercept the man should he come out. Even if Arthur managed to burst through the wall Adrian would be mid swing with hi enormous mace.