Gamespot has really underrated this game, I'll tell you why.
The controls are also very good and easy to pick up. But there are many glitches as well. For example, when I was fighting one of the bad guys, they suddenly turned invisible and I was still getting hit, which made me feel very mad. Even worse was that I had to fight the final boss, but he ALSO turned invisible which made me stop playing that game for a week.
The graphics are also quite good for a PSP, but the sound isn't good, it should be better for a PSP. In the end, it's still a good game even with all it's glitches and bad sound.So I give it a 7 out of 10.So you should get this game if you like assassin's creed or stealth games.