The public event kill target especially on Earth is defective.
So many times they are near impossible to kill and they get to the end point way to fast.
Either fix it or you'll see even more ignore it. All it seems to do is use u all your ammo for nothing.
-
It's probably supposed to be hard. Although you'd think it'd be harder to take out Fallen Walkers instead. I just skip it if there aren't a couple other players in the area.