Objectively wrong.
The what WAS the mood? All I saw were regular farmhouses, some everyday beaches and cliffs, and typical europe-looking city with a few fugly black walls and screens added. It was pretty much "Humanity is in peril. Save them." Everyone's strangely cheerful attitude made the invading combine look like a joke.
Ravenholm had a nice zombie-town atmosphere though, if it weren't broken by the line of infinitely spawned zombies (I'm serious, you could see they were spawned at the exact same interval, too). And the Citadel was your average sci-fi citadel.
Basically what I'm saying is there was nothing of interest in the environments or set pieces.