it was an attempt but it had many problems
1. im pretty sure that when you shoot a guy in the head that he will die.
2.if you keep hold of fire and aim at an empty space and then hover over an enemy, the bullets all of a sudden dont affect him.
3.and as TMINTH said the bullet goes where the cursor points after the recoil not where you aim.
once you think youve got going and are on the right track you notice youve gone the wrong way and take like 3 minutes getting back to the right way. quite annoying really.