Plot (3/10): it was kind of disappointing that blade and soul didn't really have a solid plot, the episodes aren't connected to each other whatsoever, each one has its own events, characters and places, I found it to be very boring actually... I wouldn't recommend this anime if you're a fan of big/complicated plots.
characters (4/10) : since females are the only ones who lead, there's total absence in characters variance, no originality, basically they all share the same looks, even personality except for Aruka who is the silent/dark type which is even more annoying because the main character is supposed to stand out, not stay silent for 3 consecutive episodes.
Graphics and sound (7/10): the thing that attracted to this anime is mainly the graphics, after watching the first episode you can tell that it has good animation, great battle scenes, the sounds were also beautiful and really matched the theme.
character development (6/10): the main character really changed a lot through the episodes, from a cold blooded assassin to someone with a human side, lost and confused, instead of becoming stronger, Aruka became weaker, I don't want to use the term "useless" but her presence in the anime just became annoying and you'd wish she reverted back to her old self.
in general, I had great hopes for this anime but it disappointed me, I wouldn't say it's bad, it's okay but just didn't live up to the expectations..
