Do not play this game. It is full of glitches, lags like crazy, freezes often, and its even possible to get stuck in a position that will result in you having to start a new game because of its terrible design. Oh, and there are a ridiculous number of collectables. Like I said, save yourself the trouble and just never play this game.
THQ should be fined for releasing this. It was buggy and me being an expert gamer even got lost at times on where the heck to go. My kid was totally lost and we just ended up giving up on the game. Terrible!