Pros:

Feels exactly like Silent Hill
Has a neato custom sound pack
Has cool puzzles

Cons:

Not enough weapons and health for 4 people
It's super-duper long!
The other characters don't pick up weapons or anything, they're stuck with pistols through the whole thing!
Some glitchy puzzles

Conclusion:

I thought this was the coolest thing when I found it! If you're a serious Silent Hill player, you'll probably love it as much as I did. There are loads of zombies to kill and cool little areas from Silent Hill to explore. Even the puzzles are there! The only complaints I really have are that the other characters are programed not to pick up weapons for themselves? Also, there are only a few weapons scattered throughout the game and VERY FEW health packs; way too few for 4 people when the other characters are too stupid to do anything for themselves.
Also, the puzzle in what I think was the last level was faulty. The one where you're in the room with the painting and candles and the safe room door is barred. (If anyone else is having trouble with that part, this is the way I did it: I brought all of the characters into the little hall and beat them with my pistols 'til I had pushed them into the room together.)
If these few things were changed/fixed, I think I'd rate it a perfect score!

Pros:

Loads of fun
Interesting maps
Very direct, the path is always marked (Except in areas where it's not supposed to be, such as the mansion and the catacomb areas!)

Cons:

Sometimes the NPCs will get stuck and drag behind, but I just went on without them and they caught up.

Conclusion:

This is an amazing campaign! The maps are very well designed and the whole atmosphere of this campaign is just great. Had an awesome time playing it and it became an instant favorite.