Medal of Honor

Well I'm playing Medal of Honor on PS2 (I actually got past that impossible beach bit at the start - hooray for me - and none of the rest of the game is actually like that, which is a bit misleading) and it's pretty awesome. But one thing that is bugging me - when I 'sniper' (snipe?) those Nazis and when I shotgun them, they actually don't seem to go down! They act as if they've stubbed their toes. And then I try my 'silent pistol' on them and they drop like a little Nazi fly! Strange game. But a cool one - almost as good as Castle Wolfenstein, but not quite.