First of all, the story. I think that the way the story jumps about in time and between characters might be confusing at first for some people but it definitely clears up as the series goes on and ties together fantastically towards the end. The series only covers the first few light novels and there is a lot of material that wasn't adapted, but don't worry the series stands on it's own and you do not need any of the novels to understand it. I really enjoyed the chaotic structure of the show and the way that you slowly join the dots with the different events and characters.
The art is very good, particularly the character designs. It strays away from the tropes of many action shows where all the main characters have some sort of specific gimmick or feature to make them stand out (heterochromia, dyed hair, etc.) yet still makes every character clearly distinct and easy to identify at a glance. The animation as well is fantastic and the fight scenes are really entertaining and well choreographed. My only complain with the art would be that sometimes the amount of blood is a bit excessive and unrealistic but that can be passed off as a stylistic choice.
The characters for the most part are really well developed despite the short length of the series and the strange structure of the episodes. There are only a few sections where character interactions seems a little unnatural or rushed which drag this down from being a 10 for characters.
I had to give Baccano a 10 for enjoyment because I went into it only intending to watch a couple of episodes and ended up marathoning the entire series in one sitting, although I may be biased slightly because I love gangster movies and shows so I was more inclined to enjoy this show as well.
Overall I think Baccano is definitely worth watching for anyone who likes action shows or shows with great characters.
