Two days later, everything was prepared and the orks in their divisions could start to go and execute the plan as the first three groups of Undead were prepared to go into action and start attacking the three points of interest for the Vampires.
All of them were aware the second they were spotted; the Vampires would be forced to send some of their forces from their headquarters to defend their positions because they confirmed that the bats were indeed excavating something in those places, aside from having there their altars and a few of their priesthood.
From what Samiel knew, only rarely someone excavated something in the 10th Flooor because it was pretty much dangerous. Digging into the ground wasn't the brightest idea where many underground species lived was pretty much suicidal and only a few would do something like that...