It does look nice, has Survivor dialogues, and plenty of supplies. It, however, has little originality, and tries to make up for it with numerous exhausting panic events. The weakest spot has to be the finale; there's little Infected to fight, pretty easy scavenge, and it has the L4D1 gang helping you out. Bots are completely retarded through most of the panic events, and they miss supplies in plain sight at several occasions.

So the construction quality, lighting and paths are better than the average custom campaign. Not quite at the level of the top tier, but still pretty good. There are places and set pieces that you will recognize from other campaigns. "Hey, I have seen that before" will run through your mind many times. So there must have been some copy-paste from the stock campaigns. In my opinion, the problem with this campaign is one that I see a lot in the customs world. Too many hordes. Too many panic events and gauntlets. Gauntlets that run too long. It makes the game tiring, and I think the joy of L4D2 is the natural pulse of the game - noise, then quiet. You need time to breathe. More is not always better, and when you just have nonstop action, the game starts to feel like a chore.