Jack did not mind encountering a huge swarm like the one before actually, as it provided large numbers of monsters with low HP. He could harvest a large number of souls to fill up his Container of Souls in this way. The others were also helping him get the souls as he could get them even if he was not the one killing the monsters. He just needed to stand close enough when they die.
Just from the last two swarms he had collected 72 souls. With the additions of the souls he still had left in the Container, added with the ones he collected from the Monsters during his travel this morning, he had 112 souls in the container, 10% of the total he needed to upgrade another basic skill.
He made a mental note to go look for Giant Ants hunting ground outside of this dungeon when he leaves. If he could find such a large swarm of easy-to-kill monsters, he could quickly fill up his Containers of Souls.
