I mostly enjoyed it, but I did have some problems with it. I felt like there were too many characters and that hurt the pacing and character development. I thought David did pretty good playing Clark/Superman. The bickering between him and Lois was a bit off-putting. That scene should have landed on the cutting room floor. Nicholas was very good at Luther. He walked the tightrope very well to not fall into cartoonish. I thought Rachel B was okay as Lois, but I hated her wardrobe--especially her shoes. David and Rachel had palpable chemistry.
I laughed each time I saw Nathan F. in that ridiculous wig
Kyrpto was cute but the banter between the dog and Superman got old for me fast. I do recommend the film. I'm just rarely impressed by James Gunn.
Story: B-
Characters: B
Acting: B
Special FX: A-
Dialogue: B-
Overall Entertainment Value: B-