I guess it would be cool if in the Inner City section, you start to notice little things that point out that the town isnt what it used to be, open graves, a scared homeless guy mumbling "zombie"
Then you find a hole in a the wal of a opera, theatre or what ever, and the you go inside via the backstage area, you see make up artist dead, blood every where, a dying actress, etc, etc.
Then you take some stairs up to thestage and you see.....
...that the entire audience is wiped out, except off course for a few badly wounded people dying, telling you what the hell went on in there.
People tried to fly, but as alweays, the exits were to small, and people ran over each other to flee, people where getting trampled to death.
A few survivors made it to the entrance, only to find out that a hell of a lot more zombies were waiting outside...
And off course, you are going to need LOADS of gore to really freak people out. The theatre's lights are out so its dark, textures look better this way aswell. Blood on the walls, "Help" written in blood, cracking sounds, dead kids, very faint movements in shadows, but there is nothing there, but you know that you are being watched.
If you need more ideas, I could go on forever.
That goes for other modders too, so if you need help, just post or go to the forum at
http://www.glitchedtodeath.moddb.com