Good original game with nice graphics but hampered by everything else; held a candle by itself but shallow by comparison
On my obsolete AMD X2 3800+/GeForce 7950 GTOC this game runs respectably well. But then Crysis does run respectably good here too. The package does advertise unlockable PhysX-heavy level only with a hardware PhysX card, from what I can tell this is entirely of a marketing gimmick, Crysis can do a very good software physics here albeit I do forget if it is Ageia/Havoc/or homebrew.
Good graphics/physics/thinkers' FPS/squad/... what is not to love? Except in comparison to the cream of crop Crysis and COD 4 everything good here can be relegated to subpar, except the squad, COD series put you as junior member, and Crysis has none to speak of, while GRAW 2 put you as squad leader with control.
GRAW 2 does take a simpler approach of most shots in anywhere of the body is lethal shot; not a very realistic way but it does simplify things a little. Although still borders difficult to play.