According to the rules, Elite BOSSES' aggro would never be fixed but that did not prevent Wang Yu from doing what he could.
If Wang Yu knew about this setting, then he would have attacked the BOSS's private parts to increase the aggro.
Wang Yu's consecutive pole strikes disrupted the originally not stable aggro setting of the BOSS as he single-handedly pulled the BOSS's aggro on himself.
With Wang Yu here, Hell Lava did not bother about anyone else and no matter how the others tried to attack him, his only aim was to kill Wang Yu.
However, Wang Yu was just like a mudfish, and a clumsy BOSS like Hell Lava was not able to catch Wang Yu at all. Instead, he was struck everywhere.
God of Death's Left Hand finally understood why Fearless made Wang Yu attack the BOSS alone.
Given how overwhelming the BOSS's attacks were, no tanks would have been able to hold him back.