I found this to be a good game. I am just so used to playing your other stick games. What I don't understand here is what the purpose of the slow motion thing is. The weird thing is that I myself am no more better at running than my enemies. I just find it strange how it doesn't effect you much. The graphics are still good, though.
I think the strongest thing here is how it does have a unique premise. I would expect a game about ninjas to have you fighting, but instead it was a running game. You don't have many of those nowadays. I would have preferred a game that did have fighting. There could also be some more details in the scenery.