Despite the obvious graphical downgrade (especially with the absence of Global Illumination), I must say this game has met and exceeded my expectations gameplay-wise. I really hyped it up in my mind, so I was worried it would be a let down, but am pleasantly surprised. The game is full of detail, it feels alive even with the population dying of a virus and the streets pretty much empty. I'm excited to see what other content there is, the end-game content, and lastly I'm hoping we get to go to central park (which I assume will come with DLC).
I'm also hoping for the most important part, optimizations. The game has some wild fps drops, it really needs some patches/better gpu drivers. I'm hoping by March 8th it will be a bit more stable.