Upon seeing the formation that the trolls had assumed, even a newbie would be able to say, that they weren't ferrying well in the battle as they were forced to assume a defensive position.
Four of the remaining trolls had formed a semicircle around the one wielding the crossbow, with their backs against him. As he was the only one who could have taken care of the cannons for them, the other trolls wanted to protect the arbalist at all cost. (An Arbalist, pronounced as arbelist, is someone proficient in using a crossbow)
After seeing how easily Dread managed to kill one of them, the trolls became rightfully reluctant to face him, and would only try to attack him if he got closer to them. Otherwise, they maintained a safe distance from him.
