There comes a time when we are stuck fighting infected in a saferoom and unable to move anywhere, especially if there is a tank. We'd work so hard to defeat the tank and all of the infected, and all that would be in vain for all we had to go through. And then there is the time when the rescue vehicle arrives and a lot of infected and tanks keep coming our way and not all of us can make it to the rescue vehicle, or the area in which we would finish the campaign. Sometimes it would take forever for us to even get to the rescue vehicle, especially since the timer for rescue vehicle departure is not implemented in all custom maps. It's understandable that the rescue vehicle departure timer was added, but why were awards disabled for that time period? Oh and by the way, sometimes at the first map of certain campaigns, it is sometimes hard to tell which is the safe area, which is the area where awards for kills is disabled. That area is not protected from the infected, and we could still easily be killed there due to all the common and special infected. Remember, we would be forced to fight in all these instances, and we can't really evade them so easily and quickly.