Silly yet entertaining.
The story is decent, but also very simple.
I really liked the graphical look of the seven deadly sins, even though they did not make a lot of sense.
The entire movie has a teenage feel of it. If you like this genre and you like superhero movies, it might be a hit for you. Being a semi-old man but still a geek for superheroes, I was acceptably entertained. Also, I am a big fan of Mark Strong, who is a great super villain in this movie.