if you mean left 4 dead the game, the hunters are things which jump on "the survivors" and tear them up. If you mean something different, though, then I have no idea.
If you click your scrolling button on your mouse, you scope. Shoot with the left click
The zombies I can think of are called boomers, spitters, hunters and jockeys and witches.
No, Left 4 Dead 3 is not coming out. There is only Left 4 Dead and Left 4 Dead 2. Both fun games.
Ghost Hunters - 2004 Speaking with the Dead 4-17 was released on: USA: 24 September 2008
Ghost Hunters - 2004 Club Dead 5-4 was released on: USA: 1 April 2009
No, left 4 dead will only work for left 4 dead mods.
left for dead
They (Valve and Havok) haven't announced a left 4 Dead 4, but they have announced a Left 4 Dead 3 coming out in 2011.
You can't get The Passing on Left 4 Dead 1. It is only a DLC for Left 4 Dead 2.
Not Left 4 Dead 1 or 2, but Valve and Havok announced the Haggard in Left 4 Dead 3.
Zombie Hunters City of the Dead - 2007 Four 1-4 was released on: USA: 5 July 2008
Left 4 Dead is quite a good game if you like shooting zombies in an online mmo style. But, if you already have left 4 dead, you should get left 4 dead 2.