Single Player is very much like the console versions. Multiplayer is not worth much. One of the better FPS's for the PSP
Graphics: Disappointing to say the least. This does not look anywhere close to the console versions. The level of detail is not there and the edges of things look kind of blocky. With that said It does look adequate for a PSP game and some of the environments do look impressive. Overall definitely the worst part of the game.
Sound: The sound in this game is outstanding as in all Call of Duty games. Sound effects are great especially the explosions as well as the voice acting is top notch and just generally sounds like you are in WWII. I especially liked the fact that depending on which side you are facing while wearing headphones it will be louder on one ear than the other. So if the left side of my body is facing the explosion it will be much louder in my left earbud. Just a nice touch that I felt added to the experience.
Value: The single player campaign is exactly like console versions with 3 different campaigns United States, Canadian and British all with plenty of missions. The missions are kind of short and you can kind of plough through them if you really wanted to but overall the length is good. The multiplayer however isn't even worth mentioning 6 player ad hoc is just not enough. This really needed online badly. The extras in the game are a nice a very nice touch like the console versions giving you background info on the weapons and vehicles.
Tilt: This very much felt like the console versions and it is a blast to play like all Call of Duty games. The control scheme works well enough and the graphics even though sometimes a little hard to the eyes does not take down the experience that much. If you are looking for a great single player shooter for the PSP I definitely recommend this game. If you are looking to play it multiplayer I'd look to Medal of Honor: Heroes instead.