Overall a great experience. But better than a continuation of the CoD4 story could've been? Nah.
The gameplay itself is not bad at all. It retains a 2 front story, with half of the time playing Russian soldier Demitri Petrenko and the other half as thhe USA soldier, Pvt. Miller. The overall difficulty on any level is noticably higher than the previous CoD games. There are tons of weapons, and it doesn't take long to remember each strength and weakness. Enemy AI is not as good as it could be, as enemies rarely use good cover and often just stand out in the wide open.
The graphics are fabulous, and the sounds are realistic; no complaints there.
The replayability isn't all of the game, mostly pick-your-favorite-mission types of play.
The multiplayer is more of the same, basically just CoD4 with a WW2 mod. A few new perks, vehicles, and maps barely seperate WaW from that of it's prequel.
Overall, it is worth 50 bucks, and even though it could always be better, I give it a 8.5/10