The second half is bad and ruins the whole show. The last 3 episodes things get all mixed up together the characters are full of themselves and things get too unbelievable for me to suspend reality. The first 4 episodes were interesting. Yes, Sang-pil was fighting 20 people alone and winning but this was the only over-the-top thing happening.

The end felt rushed, characters were waiting to do things for the sake of the script. e.g Ahn Oh Jo, screaming he is going to kill himself then it looks like Sang-Pil stops him then doesn't actually take his gun away so he shoots himself anyway after their conversation. This is very bad writing and it happens multiple times in the second half. Also, the scene after Jae Yi gets kidnapped by Ahn O Jo and Sang-Pil goes to rescue doesn't make sense. Why give Jae Yi the gun? Why did O Joo try to kill Sang-Pil then suddenly not kill him and decide to fight him? If he had kidnapped Jae yi to force Sang Pil to do something why did he never make the demand, why keep Jae yi alive if he wanted to kill Sang-pil? Kill Sang-pil he is left alone with the kidnapped leverage (Jae yi)....This just makes no sense.

The acting wasn't very good either. The characters were all one-dimensional.