I need your soldiers to assist me down below. The Wood Orcs work well enough, but I think a lash at their backs will push them to finish even more quickly. I trust you realize time is of the essence here. That nosy mage Bakkhara was watching the upper entrance again.
Use your remaining forces to guard the falls. If anyone shows, kick them out. And if they won't cooperate, use lethal force. If anyone discovers what we're doing below, the future of the entire Dominion will be in jeopardy.