I'm a fan of Atlus games as well, including Devil Survivor series. What I like in the second game, is that it is more light-hearted than the first one. The first one is the exact definition of horror. I still love the first one though.
Story 7, Art 8, Sound 9, Chara 6, Enjoy 8, Overall 8
The story is quite simple, so I won't comment much. What I like about the story in the anime and the game, is because the anime diverts itself from the game. Lots of different dead clips and events differ very much. I actually like that, since it makes me wonder who's gonna die next, and what kind of ending will take place.
The art is good. It is so very like "2013"-ish. I like Suzuhito Yasuda from Durarara!!, so I can enjoy the art.
I don't really pay attention to the sound, but I love the opening and the ending.
Characters are usually the main reasons I watched an anime. Aside from art. The characters don't develop that much, and I must say that I was quite disappointed by the developments. Hibiki's actions are actually from your typical shounen protagonists. Though I can relate and forgive it, since I thought his actions are perfectly normal for a normal high school students who were suddenly brought to the end of the world.
Still, because I'm an ATLUS fan, I can't stop watching this anime.
I would've put the overall as 7.5, since the core point of the anime was struck down.
As a bonus, I finally realized that this anime is actually very interesting. You need to watch this further deeper into the episodes to know its quality. I admit, that the few first episodes are utterly disappointing. But I can't say that again to the later episodes. It's getting more and more interesting.