Lenny was not so foolish as to think that he was going to win the tournament by brute force alone. As an assassin, he functioned from the position of strategy and information.
If Riff could kill an unkillable beast that Lenny could not kill, then it naturally meant that he had information that Lenny did not possess.
A lack of information was a sealed death waiting to happen for any assassin.
Lenny had sworn that he would not let himself be the fault of such a clearly avoidable situation. It was how he climbed to become the best in his previous life.
Vine took a look at him and thought he looked cute in his search for knowledge.
"You know, if I had never seen you butcher a man before, then I would say that you would have made a skilled physician." Vine complimented.
"Since you want to know so much, I don't mind telling you...