I get it that Byung-woo Kim is a newbie writer and director, but this film has to be the worst camera work I have ever seen. Was a 95 year old with arthritis holding on to the camera? A 5 year old could've done a better job with a 1990's camcorder. I got dizzy and a migraine watching this film.
And then the ridiculous 2+ hours of dragged out and pointless scenes, that even with the decent pacing, felt like 3 hours. This story should have been a maximum of 20-30 mins. The dumb cliched scenes of drinking and constant smoking to look cool - during a mission. A 5th grader could've written a better screenplay. The story adapted from the novel by Sang-yeon Park was great, but sadly, it was poorly executed by the director with its many plot and technical issues.
Most of the dialogue was idiotic and illegible, especially from Jung-woo Ha. His English is terrible and I'd rather he spoke Korean with sub-titles throughout the entire film. None of the actors were convincing in their roles, except for maybe Agent Mackenzie and Dr. Yoon.
The only thing this film had going for it were the hi-tech sets, S/VFX, the constant action (of which most of it was was captured poorly by the director) and the (finally watchable and entertaining) last 10 minutes of the film.
So it's a generous 5/10 from me.