Overall, pretty good. While not my favorite Korean action film, if you like the genre you will probably enjoy it. Overall story and tropes will be broadly familiar to anyone who watches much Korean crime/action.

My one criticism is that the antagonist is cartoonishly evil - a genuine sadist - and his sadism is demonstrated probably more than is necessary, and in more extreme ways than is necessary, for a film which is trying to be more comedic.

Other than that, some good casting/actors, many of whom will be familiar to fans of the genre, including a cameo by Ma Dong-seok, probably my favorite actor in the genre.