What a fantastic game!
When I put it in my PSP, I could choose lots of languages, so I took my local language (Dutch), most of the time, dubs aren't really good, so I just take the English voices. But the Dutch voices were surprisingly good! And the other languages too!
But about the game again. The graphics are seriously one of the best on the PSP, they can rival Crisis Core: Final Fantasy VII and God of War. Sometimes there are glitches, like an enemy disappears in the ground when it comes toward you, but these are minimum.
It's also very fun to try all the different weapons, your main weapon will be upgraded through the game. At the point where I am, I now have double guns. There is also an acid bomb, which poisons and enemy. You can even make plants live with another weapon too let them do stuff for you!
The sound is fairly good, the music is not superb, but good enough, compared to other games. Sound effects are nice. And the dialogues in the cut-scenes are awesome!
Overall, I really think you should buy this game, since it's a budget price, and It's very good!