Though it wasn't the masterpiece that some reviewers have said, nor was it a 1 star film, it was still enjoyable, especially if you go into it knowing Korean cinema style. Basically its your typical superhero tale. Average guy has a boring and average life until he comes in contact with a life altering substance that turns him into a superhero. He now uses his power to save his daughter from a shadowy organization. So its typical comic book stuff with a little "Taken" in there. Many will find this film to be too silly, but thats the style of Korean cinema, if anyone has seen "Train to Busan" you will see that a movie can still be amazing even with silly acting and borderline slapstick comedy. Unfortunately some people will be turned off by it if they are not used to it, but for this reviewer, it didn't bother me.
So as I said the acting is silly in some places. But this is common place for the region. Some of the serious acting was alright but I found it to be all very average. The cinematography was also hit and miss, some of it I thought was great but most was just average filming. The super hero scene, I did enjoy, though sometimes it borders on "The 3 Stooges" slapstick action. But I still enjoyed most of it. Not a thought provoking piece of cinema, but its still a fun watch if you've got nothing else to watch.