Here is another preview video, here we see more game play action. What really looks cool in Killzone 2 is the reactions of the characters when you shoot them. In this video we see how the characters stumble and fall back once they are shot in the head. The scope on the gun makes it easy to aim at the enemy and shoot them right in the middle of the head. You also see how you are the commander of the troop and you need to guide you troops safely into battle.
Killzone2 Headshot Video