A much under appreciated game which should be played over and over again.
Graphics are well established with few glitches in regards to camera angle. The one downfall is that you do see repeated textures and objects throughout the game. Fortunately as other reviews have stated in addition to my own. The levels are of a size that you disregard the graphical aspect of it and focus on where you can go.
The gameplay is fun. After a very explanatory (and Narrated) tutorial you are sent through to play a "mission" As you "level" through the game you learn more special moves and techniques that can be used anytime depending the position or aspect of your character or the enemies. There are no requirements for of a specific "power usage bar". In addition, the use of weapons is made available. These weapons have a limited number of times they can be shot or activated, however you will find them throughout the game as enemies will drop them.
This is a game of hand-to-hand fighting mixed with a 3rd person shooter. It requires more strategy than most, and makes it hard to just "run and shoot things". This is a well balanced game which I have played through many times over the last few years.
On a side note and disappointing note, it does require extra effort to work well on Windows XP (not entirely sure about Vista).