If you like FPS games, and you own a PSP, this is a must have. I've only played it about a 1/2 hour, and it's on time. The controls are about as good as it's ever going to get for FPS on PSP, with a lot of options and sensitivity tweaking. The enemy and squad AI isn't frustrating, and the visuals are clear and discernible. Load times are negligble. The levels are just the right size for your portable gaming time. Fuck that dude on IGN who said the levels were too short - first PSP game levels are too long, NOW they're too short? Get off the glass dick, IGN. There's a skirmish mode with maps you unlock via single player, where you can set up a deathmatch with up to 16 enemy bots for quick single play. Apparently there's all kinds of unlockable "skins" for your character you can unlock and use online. I haven't actually played online yet, but I will be hosting some 32 player matches from my PC server setup this weekend (you can download server software from EA and run your own setup - how fucking cool is that for a portable?). I'll bump this up with the details later. I may not be there for every match, but I'll give admin rights to some trusted Evilborian to keep the fucktardery to a minimum.
Bottom line - for a portable FPS, this game delivers. Tons of options, multiplayer done right, the best FPS controls for PSP so far, great longevity and replayability for your buck. Worth the $40.