The Games Mente (Running & jumping, collecting, fighting, a few puzzles to solve) repeat repeats. Since the game is less difficult than the previous, you unfortunately realize the faster that you really just do the same things almost always carries (Running & Jumping), which are rarely interrupted by variety. Even if the change places in the game, it's hard to say after a short time, which places different from each other. After the first few hours of play you have actually seen and done what is an encounter in the following years and often repeat everything.
Graphic design and animation are in my opinion the only reasons that speak for this game. The few innovations that brings the game to the weaknesses of the game design is by far not caught on.