Pros:

- Represents many different areas of the real City 17 in Half-Life 2!
- Music from Half-Life 2 is actually put into the campaign, which i thought was AWESOME
- Finale was very cool, you escape on a train like you do in episode 1!
- I found little to no bugs.
- Not too easy and not too challenging. I loved the enormous amounts of zombie hordes that came after you, it made it much more exciting.
- Lighting is very well done

Cons:

- Add the citadel looming in the skybox, just like in Half-Life 2! I think that would make this very much more like City 17.
- Really I can't think of anything else! Not many things wrong with it in my opinion!

Conclusion:

A very, very well made campaign. Very close replica to the Half-Life 2 City 17. Even if you have neverp layed Half-Life 2 this campaign will still appeal to you very much so. One of the best I have ever played!! 95/100!