Fast paced action with revolutionary graphic make into one heck of a game
The difficulty has been tone down after the first pursuit force with more fluent frame action graphic and a checkpoint system to stop you from playing A GODDAMN ****ing stage if you fail like number 1 make you to. Also, the X-tra easy difficulty also would help a lot of newbie unlike what number one did to our gaming experience
As for the plot, you can easily enjoy this game without playing number 1 since number 1 didn't really have any plot, so if you are planning to get into this series, then play number 2 only.
(Even though I play the hardest difficulty). As for some game mode like sniper stage, the PSP directional pad make it really hard to do precise aiming that this game require you to do. Also, the downer ending was sucked unless they will make number 3
Overall, all I can say is, if you owned a PSP but haven't played this game, then you are missing out some extreme fun that would make you punched a baby if you realize what you missed (but don't play number 1, it will ruin your PSP gaming experience)