They were worried that those Green Skins, if they made use of explosives in a targeted manner, would be able to blow up their location, and they might face attacks from all sides—especially if the enemy used ladders to climb up.
Matins and his group were still searching for a more suitable location to hold their ground.
Despite no one knowing whether the last abandoned high-rise, which seemed defensible, was the best spot they could find next, or if the next would be even worse, they had to keep searching in order to maximize their defensive advantage.
This time, The Emperor seemed to have heard their loyal prayers, and their luck suddenly changed for the better.
A soldier discovered an underground space amidst the ruins of a building.
As for defending, this kind of basement was well-suited. Although there was still the danger of collapse, if it was deep and sturdy enough, the risk of being buried would be smaller than having a high-rise blown up.