If you own a PSP then get this game. It's as simple as that, to be honest. Smooth controls, graphics, gameplay and online play. This game has got pretty much everything, and you would be a fool to miss it.
The story is pretty straight-forward, and is the one weak-point about this game. As it's a World War II shooter, it's pretty much the same story as every other medal of honour or call of duty game. You are an elite soldier who is very proficient at killing Nazis. Simple as that really. What there is of a story (World War II history lesson) is described at very start of missions, and then there are a few cinematics before and after every chapter. Unlike the other Medal of Honour games, there are no story events within missions, you are given your goals at the start, and you must complete primary objectives, and secondary objectives are optional.
The gameplay is, in a word, fantastic. Really easy to control with a very nice control scheme and unlike other shooters on PSP this game is genuinely fun to play. It's handled itself well in the weapons department. My one complaint concerning gameplay would be your Allies. All they do is block your shots, take your kills, and accidentally blow you up with grenades.
This is not a problem, however, when playing in skirmish mode or online. You just kill everyone in sight on the skirmish mode as there are no team-based games. Although, if you take the action online there are some very nice team-based games, like classic capture the flag, or hold the line. The online play is very fun, but very frustrating as it's a little unbalanced. 9/10 people you encounter will be wielding the shotgun because it's so overpowered.
Medal of Honour pushes the PSP to the max, yet it doesn't show it. I haven't had any frame-rate issues or laggy play at all yet, whilst enjoying the high-quality action going on, on the screen. The sound quality is fine. Not perfect, but satisfying, and the score is quite pleasant I think.
My only real concern for this game is that there's nothing new. It's all just content ripped off of the other Medal of Honour games. The interface and weapons are from European Assault, the Music and voices, straight from Allied Assault. There's more, but I think you get the gist of it.
All in all, a great game. A must have if you buy the PSP as it will keep you coming back for more.
Story - 7
Gameplay - 9
Presentation - 8