Reason
Even though Kaleb had run out of power, Michael and the rest were more than enough to deal with the remaining two opponents.
Thaor charged toward the Berserker with the Titan Arm Soultrait, while Lokai and Mekhaz focused on the Berserker wielding a humongous black sword.
Mekhaz focused on countering the humongous Sword of Doom by altering its trajectory with great precision. Since he had fought the Berserker with the Sword of Doom Soultrait a few times before, he knew how the Berserker would move and how powerful the Sword of Doom was. It could cut through most metal armors, which included Mekhaz's Living Armor. Mekhaz didn't dare to get hit by the Sword of Doom, but that was even more reason for him to act carefully and forcefully divert the Sword's trajectory with his spear.