So, for the first 5 or so episodes, it's just about bad enough to laugh at - love some of the 3D visual effects where the characters look like cardboard cutouts... instead of that just being their personality. Those that have one.
Such a large cast with so little focus means you barely get to know, or more importantly, care about many of the characters.
My friends and I did admittedly watch it in one sitting... but I don't think we would have wanted to continue, had we stopped.
It had a lot of potential, but for us it totally failed in delivering on that potential.
As you can perhaps tell, I wouldn't much recommend this anime :P