The counterattack of Hellfire was not something easy to withstand. Under the assault of Hellfire, even the previously victorious Saint-level Undead was severely injured. No matter how strong it used to be, at that point, it barely had any combat power left.
Considering the strength of the Saint-level Undead, Zhou Tian wouldn't stand a chance in taking them on unaided. However, in the current situation where the Saint-level Undead was heavily injured, if Zhou Tian still couldn't defeat it, he'd be utterly useless.
Quite clearly, Zhou Tian, despite his lack of experience to truly challenge the Saint-level Undead, was merely a step away. Faced with an injured opponent, it wouldn't be a problem for him to secure a victory under such weakened circumstances.
Therefore, right after the Hellfire perished, Zhou Tian immediately launched a series of skills at the Saint-level Undead.