Apocalypse Yesterday

You are in a post apocalyptic world desperately trying to keep yourself going by searching the crumbled ruins of what used to be, hell you don't know, just some huge city that used to be important. You know you have a goal now to get across the city to an area you heard a survivor talk about before they died, lots of people there, a whole community of survivors. So now all you think about it reaching it. The only trouble is surviving long enough to get there yourself.