The combat knife is part of the special weapons category so in order to get diamond on the knife, you must get gold on all of your specials. Including, assault shield, crossbow, ballistic knife and combat knife.
Left 4 Dead 2!!
No
Yes there is split screen for left 4 dead 2.
left 4 dead 2 can be downloaded from Steam
yea so is left 4 dead 2
no, left 4 dead 3 would not have the same characters as in 1 or 2
Actually, Left for Dead and Left for Dead 2 are based on the remade Dawn of the Dead.
4 players can play in Left 4 Dead 2.
No, Left 4 Dead 3 is not coming out. There is only Left 4 Dead and Left 4 Dead 2. Both fun games.
It is a Key that will unlock the Left 4 Dead 2 in your steam library
You can't get The Passing on Left 4 Dead 1. It is only a DLC for Left 4 Dead 2.