Understanding Slaughter

He had been filled with fighting intent when he kicked open the door.

He had wanted to fight. He had wanted to break the attacks of his enemy with his sword. He had wanted to slaughter his enemy with his sword. He had wanted to dominate them and make them look at him in despair.

But, he had been cheated when he saw the unconscious members of the Wang Clan.

That. Had. Been. A. Let. Down!

So, naturally, his fighting intent had disappeared and he had wanted to end this farce as soon as possible. So, he killed the Wang Clan patriarch without even bothering to speak a single word.

Duncan felt his emotions at that moment. There was disappointment. There was anger. There was even a sense of dissatisfaction. And then, there was a numb feeling. Seeing those defeated by him, he had only felt contempt at that moment.

Was he arrogant?