I liked the way the game had a first-person view in the "real world" it made the game feel more like the tv show. However, as soon as I got into Lyoko I became very frustrated. The camera follows your character at an odd angle which wouldn't be a problem except that it often swings around to another odd angle at a crucial moment (like, for example, when you're walking on the edge of a cliff or about to attack some enemies). The camera also made it very easy for me to get ambushed from behind because I couldn't really see behind my character. The camera angle also made it hard to attack from a distance while dodging my opponents' attacks. I know that I fell off several cliffs due to the camera.
Another problem I had with this game is that, since I don't really follow the tv show (although I have seen enough earlier episodes to have an idea of who the characters are), I felt somewhat like an outsider being thrown into the middle of the on-going story.
I did like the Wii controls, and I preferred this Code Lyoko game far more than the DS one. If I wasn't so bothered by the camera angle I would definitely have rated this game higher.