The season ends when he actually starts to get strong and interesting... they did a good pace to get thru the early story because this is all just warm up and introducing characters...
This chapter was actually darker in the manhwa. One of the prisoners survived, but he had his vocal cords sliced so he couldn't make a sound. He tried to play dead in order to escape, but Sung Jinwoo noticed he was still alive. He dragged the prisoner with him into the boss fight which was a goblin king or something and his minions and threw the prisoners to the minions. He died in pain unable to scream.
