Story: It's a really basic storyline, and even then its a slow progressing one. Episodes often feel disjointed and don't really lead up to each other until late in the series. Basically it's a group of main characters coming together and setting off on a journey that eventually ends up with them saving the world. Great.
Animation: The style the characters are drawn really bugged me at first, but one can get used to it. The designs are all based off of Dungeon Fighter Online (or Dungeon & Fighter, or Arad Senki, whatever) so they're obviously not very original, but they were recreated decently, I suppose.
Sound: Music works out well, but voices didn't really fit the character sometimes. That could just be me, so I give sound a 7.
Characters: There's no real development with the characters really. Sure there are hints of love, and the gunner does well as comedy relief, but nothing too special. I do like how the villains are portrayed though.
Overall: A mediocre anime, but that's not bad considering it's based off of a game. The comedy can hold the viewers attention long enough to get to the meat of things, which is very late in the series. Until then, the series is best enjoyed by treating each episode without any regard for the previous or next episodes.