While he was confident in his armour, the strength of the Night King's blows alone rattled his insides heavily. If he were a normal man, he would be dead five times over already, but his body was far tougher. Even if he was damaged, he could still heal himself. The problem was that Jon did not have endless endurance, even if it looked like he did. In the last dozen minutes, they had made more than a thousand exchanges, each one of them at full strength and speed. While he still had stamina left, he slowly began to feel tired. It didn't help that he hadn't had a good rest in nearly five days. Jon gritted his teeth, tuned out his pain, and began an all-out attack with no concern about defence whatsoever.