I like the fact that we can and will run into completely insane stuff, and I'm very happy you didn't go the whole 'dark depressing post apocalypse' route, and I like the lore so far. I especially love the knights insane enough to put TNT on the end of their lances.
Oh I'd say it's still a 'dark depressing post apocalypse' if you start to think about how absolutely fucked the world is in it's condition. But I think it's all in how it's delivered. I'm wanting the apocalypse to be green, painted in neon lights revived by a new generation of humanity that just learns to roll with the punches and even swing a few back at life's way. Even the bandits are just doing what they think is necessary to survive. You'll meet your insane evil people that love to torture, maim, and kill.
But you'll also have people that are equivalent to a barbarian, they kill and loot because that's what they know, that's all they really know, some reform their ways, others just treat it like a day job. They go off to raid and pillage, and return home to their families with their scored loot.