Best shooter I've played to date on the PS2 Console.
The sounds in this game are very realistic and believable. If you shoot a M82A1A at someone from a tunnel or cave, the sound of the gun will be very loud. Explosions are also quite loud, although I would prefer the HE grenade to be a lot more explosive sounding.
The gameplay is great, you can replay missions over and over because you can unlock different guns, equipment and different characters for multiplayer mode.
Multiplayer mode, this is where the game starts having some difficulties. There are many cheaters in this game but if you can find some friends to play with you online than it is pretty fun.