This was even better than the first movie! I watched the first movie 6 months ago once I heard about this project and say that Jung Hae In would be in it. I liked the first one but this one was even better! It was done by the same director but it felt very different from what I remember from the first one. The colors were super well done (I think that's cinematography or photography's job but I don't know for sure), and the sound track was great! I will say though, that it felt like it wasn't directed by the same person but maybe there style has changed over the past nine years. The story was a little hard to follow at times but I think that was because I watched in a theater so I couldn't rewind 10 seconds to reread the subtitles. Overall I totally recommend watching this movie if it is showing near you, it is action packed and keeps you at the edge of your seat wanting to know what will happen next.

As for the post credit scene I feel like it could potentially set up for another movie which I wouldn't complain about, but it also feels complete as is. I would love to see move of the Seo Do Cheol character but we will just have to wait and see :)

I also wanted to note that you don't need to see the prequel, but it does add to the watching experience, so I would recommend it.