Graphichs are mostly good, except for the shading which probably suffered due to consoles. Sticking to the original story, settings and weapons is also for commendation, although I find it way too sci-fi comparing to the 'mild' sci-fi atmosphere of the first part. On the positive side, the ending wasn't that bad, comparing to most of today's FPS and other popular genres.
However, lack of leaning, custom game saving and quite deteriorated shading (yes, shading) even when compared to the first game released 5 years ago, back in 2005, have affected the final score. I wouldn't mind the console port that much, if it's done properly. On the positive side, the ending wasn't that bad, comparing to most of I give it 6.8 due to several reasons.