If this would have been my way to school i'd rather stayed at home lol

One can see, just in the first map alone, how much effort went into this campaign. Its heavily detailed in each map, has many custom scenery objects and many custom events
The difficulty curve is perfect from map 1 to 5. The difficulty of the finale depends on how fast you can find the 4 vaccines, i'd suggest, you open the marked fridge last, when you found the other 3. On my recent playthrough i was kinda lucky, i found all 4 containers of vaccine right after the first tank appeared. So after that it was a simple hold out until you kill the 2nd tank, before the bus arrives, which you easily can reach, if you found and saved a Boomer Bile from previous maps. So this time the finale was pretty much easy going, but if you have bad luck, and still after the 2nd Tank is killed didnt find every vaccine, you will have a problem. Because then there will constantly be at least one Tank AND a horde AND Special Infected, so good luck then. 
Technically everything works fine. There are no bugs or other issues, except if you use a Tank model, you should switch that off, else the Tanks in this campaign might become invisible, because of conflicting files.
This is easily and still after all these years one of the best campaigns out there.
10 stars out of 10

PS: I kind of have to disagree with ZiggyStardust...This campaign is better than the official campaigns in ALL aspects, literally.