The unrealistic set up made me not care for the characters, which is probably the worst case for character driven production.

I saw quite a few people praise the movie for the realistic approach to such an unrealistic scenario and I would agree if we look at the big picture. Focusing on one character and how they are trapped in their own home, the lack of dialogues and music, which made the smallest sounds made by zombies that much more noticeable, BUT the devil is in the details and that's what they messed up.

First, there was not enough exposition about his relationship with the family, so when they tried to bring the emotional scenes related to it, I couldn't care less.

Second, they try to make us believe someone can not eat for a good ten days and still have the energy to do anything at all. He didn't even look physically exhausted.

Third, the ending did not fit the overall mood of the movie. It showed all the tragic, gruesome and questionable aspects of humanity, but then they followed it with a Disney ending, why? I think that was the most disappointing part of the movie. Amazingly anticlimactic.

What about the good? As I mentioned earlier, they did a good job in creating this "isolation that slowly drives you mad" feel to it. While the lack of sounds and dialogues annoyed me at first, I started to appreciate it more and more as the plot progressed. The zombies were done in extremely good style, we got a few "gross", but fun scenes, especially between the zombie and Shin Hye's character. That would be it though.

Overall, it was painfully "meh". It had its moments, but overall I almost fell asleep while watching. I did not connect with the characters so the whole movie did not evoke any type of emotions in me, except for frustration.