Why the food hall specifically? There was two reasons why Honorary chose the place.
The first was due to the space, it allowed him to fight unhindered. However this also went for his opponent. Mainly it was for the second reason. Larger rooms tended to be less structurally stable. The wooden beams holding the roof together were creaking with effort. The walls were cracked and barely standing.
With a little extra damage in specific places the whole room would collapse, or maybe a single large attack. Myths Unproven's attack was the cause. The destructive lightning damaged the walls and roof enough to cause them to collapse inward.
Honorary was confident in surviving the collapse. His Claymore was in a position to assist in blocking any large chunks. With his strength he wouldn't have any problem lifting the rubble either. Myths Unproven looked up and his eyes widened. Suddenly a loud crash sounded and dust rose, covering the scene.
