The art is brilliant. The character designs are good. The animation was well done.
The soundtrack, the opening and the ending themes are befitting and great.
There is not much focus on developing the characters but that's okay because that's not what the show aims to do. It aims to tell a story in an interesting and thrilling manner, which it successfully does. Except for Nine, Twelve and Shibazaki, the rest of the characters were plain and basically serve no purpose, yes it includes Lisa. Lisa was there just so Twelve could like her, to be very honest. She was useless otherwise. Five was a little annoying and her intentions were vague and pretty non-sensical.
I don't know how other people interpreted the ending, but I feel like the themes of human identity and individuality are significant here. For the characters to grow up with no identity, affection or attention is what drives them to extremes. While their main purpose is for the world to find out about the truth behind the Athena Project, I think these factors also play a part.
Several questions remain like how were they able to live after their escape from the institution.
One can argue that there were better ways of obtaining their goal than gaining attention with mysterious explosions, but I can appreciate this approach as well.
Overall, a good show. I'd definitely recommend it.
