Technically, the game is great: great graphics, superb animation, good voice acting; but the game is not without flaws.
Visually the game is a tour de force. It looks fantastic, great animation and funny voice acting (English voice track seems to have better voice acting than Spanish or French, c'mon guys! give other languages equal quality as English!). The also plays fantastically except for the motion sensing parts (even Level 5 did it better), fortunately there are only very few times when you needed them).
The game pretty much consists on action scenes and platforming areas. The action scenes (with hide-and-shoot game mechanics similar to GoW) with extremely good AI that increases in efficiency and improves their weapons as the game progresses. They are fun, but can be extremely frustrating, especially in the later areas. The vehicle areas are few, fun, but a little bit too long and repetitive
The platforming scenes are relatively simple, the puzzles are simplistic, but sometimes the high detail of the environment won't help you to find the solution. Fortunately when the system recognizes that you are lost it will give you a hint on how to proceed. These scenes are probably the weakest part of the game.
The game also counts with a reward system. Think of them as Xbox Live achievements without being able to show them to anyone on line, but they are designed to unlock rewards
Is it game-of-the-year material? Close, but not enough (at lest not in 2007, when so many great games were released); none the less it is indeed one of the best PS3-only games and one that will make you happy you have the system. Is it a console seller absolutely not, but if you already have a PS3 and you don't mind getting frustrated in a game every once in a while, you must absolutely give it a try.