2 stars out of 10 because it was pretty to look at and seemed well made from a technical point of view.

That's about it. The rest was really bad, I don't understand how anybody can give this a positive review. Trying to avoid spoilers (not that it matters, there's not a single thing in the movie that you won't predict):

1. Wonder Woman herself is basically invincible. Superman has Kryptonite, Batman has the no-killing thing, Wonder Woman though is a tank. Bullets just bounce off her and she has super-human strength, even against the bad guy who takes some sort of serum to make him stronger (which lasts all of about 1 minute of screen time). This makes the film boring and it lacks suspense as you know that nothing can happen to her.

There are several scenes where people (men, of course) artificially tell her it's too dangerous for her to go somewhere / do something and you have to wonder why, as she is invulnerable to everything. No tension.

2. The movie is extremely tasteless. The first World War was one of the most horrendous conflicts in human history, yet here Wonder Woman just strolls across No-Man's land deflecting machine gun and sniper fire without getting a scratch and single-handedly defeats any German soldier unfortunate enough to cross paths with her. Of course the allied soldiers then run after her and win the battle without taking any casualties. Completely disrespectful and it trivialises the war of attrition that was trench warfare in which so many millions died.

3. The writers appear to have confused WW1 and WW2. The German soldiers are all dressed and act like Nazi's.

4. One of the main characters commits suicide seemingly for the sheer joy of it.

5. Dialogue inspired by Moana, I'm not kidding ("I am ... from ... and I have come here to ...").

6. Physics are thrown out of the window. For example a lot of the CGI lacks "weight" when showing people or objects hurtling through the air, and Wonder Woman strolls about at one point with a heavy sword slid down the back of an evening dress at a party (which incidentally, nobody actually notices and remarks upon).

7. It's about 20 minutes too long and starts to drag towards the end.

8. Luckily for the heroes that aren't Wonder Woman, the enemy soldiers can only aim when shooting at Wonder Woman (where all the bullets bounce straight off, see above). When shooting at any other participant of the movie's fellowship, they have the marksmanship of Storm Troopers from Star Wars. The good guys of course have perfect aim.

9. Comedy-Villain German General randomly murders own officers for a laugh and nobody blinks an eye-lid.

As I said at the start, it certainly does look pretty, so if all you want is some eye candy with lots of explosions for 2.5 hours, go for it. For everybody else though, it's just a bad comic book movie. There's basically nothing redeeming here.