Downfall was a project that was delayed months ago. Finally after so long, R3AP3R 2117 and Me sat down and worked. The main goal was to make a Campaign Series for Zombie Horde. Maybe its first and final. But either way, make a campaign. Something along the lines of Left 4 Dead. We had many tests before in the past. But since a lag issue during the games launch, There is an invisible item near the top if the map. It doesn't effect gameplay, but its there. Now, This time we're trying something new, adding a Class-Based System. There will be 3 Classes, I can't explain what the classes are but their there. I don't want to take about the new version of Zombie Horde (Gamtype). Lets talk about the map. The Campaign takes about 3-5 mins, and is very difficult. The omega zombie and a New Zombie "Longshot" have been added to make it even worse of an issue. The map is a camp site. You must get from your tent to the falcon escape-pad. I can't release pics yet, there will be up in about and Hour. Pictures are having an issue, "Couldn't not find IMG" I did do it right, but its gonna take maybe an hour or two more. IDK.
Just don't make the same mistake another Left 4 Dead remaker made. Anyways, try and make sure that these classes aren't "overcompensating" for a weak, unfun basic zombie. I haven't actually ever played your "Zombie Horde" game, but from what I've heard, balancing out Infection games seems to be a strong suit for you. Anyways, good luck.