An excellent complement to an already excellent game.
The sound effects were impressive in Call of Duty, and yet the UO's sound is even more impressive. The ambience sounds take you exactly to the middle of a war, with gunfire all around you, and even when you don't see a single enemy soldier you're still able to hear an ocassional fire exchange somewhere in the distance.
The graphics are as good as in the original game of the series, but something tells me Activision could have developed a little more in this department. Or perhaps my medium-profile PC wasn't enough to prove me wrong. Nevertheless, as I saw almost the same graphics of a game released eleven months ago, I keep my position on the nonexistent much-improved graphics that I was expecting.
The missions are exceptionally good and quite difficult at some times. It is near impossible to finish a mission without reloading when playing in veteran, and that makes the game a true challenge for those fps-experts who use to play-and-finish every WWII shooter known.