Meh is pretty much the word i have for this. The action is okay, the storyline is okay, i guess.
But where it really drags me out of everything is the visual effects. One minute you see a gorgeous Atlantean city, the next minute you see a mountain being blown up by a plasma weapon with visual effects they could have done better in the '80s.
That and the sometimes a little wooden acting drags me out of a movie that had a lot of potential. Unfortunately, not a movie to go out for, but a good enough movie to watch with a bag of popcorn on the sofa on Netflix.