Who wrote this plot?

Rating: 1/10 (16 March 2017)

I was persuaded to go and watch this movie because it's shot mostly in Vietnam (where I live), that's also the reason why it's pretty popular here. Unfortunately that was a mistake; this movie is an incredible waste of time and I write this review (my first ever) so I may warn some others.
It's shallow, simplistic and predictable. A typical Hollywood action movie, in this one there are 2 monsters and, according to American superficial tradition, one has to be good and the other one bad. There is a shallow soldier who is good in everything, has some conscience and wins a hot chick. Yawn. From 30 minutes in, its clear how the movie is going to end.
I am not a movie fan or expert, the acting seems alright, the special effects sometimes impressive, but the plot is of such a sorrowful level, nothing can undo that.