The dialogue ranges from decent to unconvincing and cheesy. Same for the voice acting. (It sounds to me like one of those situations where the actors are generally talented, but they don't always know the correct context for their lines. And some of the lines could not be made to sound believable by anyone.) I also feel there's too much narration by the main character, which really kills the atmosphere.
The worst writing is found in the collectable "diary pages" you find as you play. I heard the game was developed in Spain, which wouldn't surprise me if true. It's so bad I'm internally "editing" it as I read them so I don't just ignore them altogether.
I dunno... the trailer hooked me with the game's look and feel, I am a huge fan of a well-executed post-apocalyptic experience. I expected (or wanted) much smarter story-telling to go along with it, and now that I'm reading that the game is very short (a few hours at most), I'm feeling like my money could have been better spent on Hotline Miami instead.
But it is indeed a great-looking game. And the gameplay mechanics have also proven, so far, to be solid and responsive (though I have read some complaints in other threads about control glitches). I guess it just doesn't feel as inspired as I expected, given how smooth and polished it all looks in motion.