Money well spent overall. Fairly enjoyable game with some originality.
Graphics: Some impressive effects and characters e.t.c except that it's made using the doom 3 engine which I hate. Some people don't seem to mind but I find it dark, depressing and ugly!
Sound: run of the mill FPS stuff with some well made but sometimes over the top music.
Story / level design: Started off well with some mystery, excitement. It's all linear with absolutely no chance of getting lost. as the game went on though I found the story got all a bit predictable and run of the mill. I swear some of the dialog was taken straight from star wars with lines like "you must complete you'r training, the quick and easy path will only lead to disaster!", "join me and we can rule the galaxy together" and "It is your destiny!".
Gameplay: good solid shooting with some nice gameplay features e.g.gravity combat and puzzles, death walking and spirit walking. All of which I can't praise enough. The 'vehicle combat' boasted about in some previews was pretty lame though with one crappy vehicle which wasn't very well utilised.
conclusion: Good game, worth the money spent. One of my biggest gripes is that all the great gameplay elements where shown off in the demo (which is fairly long), leaving the rest of the game to recycle the gameplay, modifying it slightly every time. You could save yourself some money and just play the demo.