A ten year old who can swim 50 miles. A 500 year old who can deflect hundreds of bullets from six assailants using assault rifles simultaneously with an ordinary metal sword... A serum that can turn people into bats because... Well just because. Then another serum that can turn them back instantly.
It was all too silly and cartoonish. This isn't the Batman who would out-think himself out of a tough situation. On several occasions he has to be rescued, which is just not Batman. But they break the realism aspect of the world multiple times and with it, you start caring less and less because it just gets stupid.
There was no fight between Batman and Damian, which was needed to show how their relationship builds and makes their love/hate situation evolve. There was no anger or jealousy from Night-wing. No proud grandfather thoughts from Alfred. Talias father is killed and she doesn't care. No one cared about anyone and so we stopped caring as well. There was no emotional connection between any of the characters even though the plot was screaming out for it. They just all fell flat and dull.
It looked nice, but at only 70 minutes I kept thinking that there was so much more they could have done to build on their relationships.
Its a meh movie. You'll watch it as passable entertainment but forget about it the next minute.