Kill enemies in one shot
To kill a hunter in one shot, get the pistol and shoot the orange parts of the body. This can be very hard to do so the best thing to do is either sneak up on them so they are standing at full height, and are uncovered. The other way (which I think is easier) is go up close to them and just as they try to whack you with their shield run backwards and when their arm is in the air you have a clear shot to the stomach.
You can also kill some of the flood in one shot with a pistol as well, but this only works with the ex-elite flood. If you aim carefully, if you shoot the lump right on the top of the body that looks like the head. This doesn't work with the human flood though.
These tricks can be hard to master, but are extremely helpful when you come across either of these enemies.
Good luck and happy shooting!
Added by: Dann2345 May 21st 2007, ID#11167