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 work that required more of his analytical skills than his fighting skills.
Caleb could see that Kelan was enjoying himself, 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 than a few waves in a row.
As for Julian, he didn't use his talismans this time, but 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.