Kelan didn't have much time to loot dungeons so even though he had already gotten plenty of experience points this morning, he wouldn't let this chance pass to level up.
Contrary to Julian, Kelan loved to fight and it was just that his extraordinary brain was much more useful than his muscles, so he always ended up doing works that required more of his analytic skills that his fighting skills.
Caleb could see that Kelan was enjoying himself and so he let the summoners summon 3 to 4 waves of creatures each time before killing them himself.
He couldn't really let them summon more waves of creatures because Yelena, Zak and Chris were still lacking Stamina to endure more that a few a waves in a row.
Julian as for him didn't use his talismans this time and he created two ice swords instead.
Since Chris had asked him if he really knew how to fight, he didn't know why but he felt the urge to show off his skills a bit more, which was really not like him.