If you're into zombies, definitely give this a try. It's a hard to find fresh take on the genre with great effects and good performances from the leads. It kept me engaged the entire time and the tension and action in every episode was really great.

That said, the plot did fall short. It got a little repetitive with characters doing what felt like the same thing over and over, walking around the hospital and fighting zombies with a shaman acting sus every time. They should have left the hospital after a few episodes. A lot of characterization was missed too at the expense of cramming in action scenes; the barely-there romance/chemistry between the leads should have been fleshed out more, and there was at least one great opportunity for character redemption that was missed - I would have loved to see Dong Rim's bully become good, and then redeem himself and get together with her. We were given the brief impression this might happen when he was impressed with her standing up for herself and then volunteered to help them. But no, what did they do? They had him betray them as predicted and then just killed him off. What a waste. It felt like a lot of characters were wasted this way.