Other mistake: In the train scene, when Ed plays the two tapes separately, the first tape says," Help...It...Let...Go, Help...It...Let...Go." The second tape is then played, saying," Me...Won't...Me...Won't...Me." When played together, it should say," Help me, It won't let me go, Help won't, it me let go." Instead, it somehow turns into," Help me, it won't let me go, help me, it won't let me go." There aren't enough words in the second recording to fill or sequence the entire sentence(s). (01:45:00 - 01:49:00)
Other mistake: When propping Jane Doe's head up onto the block, her head tilts back but her eyes stay focused toward the ceiling, not tilting back. (00:26:25)
Suggested correction: She is a supernatural entity, so her body does not necessarily behave as a normal body would. It's just one of the many unexpected things about her.
Other mistake: The time on Jin-hee's phone is 1:56PM when she gets a text from Yong-guk. But later on, when Yong-guk calls Jin-hee's phone and Yon-suk breaks it when attempting to get into the zombie-free car, the time is 3:31PM. Only a handful of minutes passed in between these scenes. There's no way over an hour and a half could have passed. (01:03:25 - 01:09:47)
Other mistake: Alice is running behind the armored cars. Once she manages to get on top of the car, suddenly the zombies that were only behind her and nowhere near the car are found at the sides too, attacking a guard and later Alice as well. Not possible considering if zombies were able to get there, they would have killed Alice while she was running.
Other mistake: The tow truck driver says he has to repair the "split axle" before they can proceed. It wasn't clear what kind of truck he arrived in but the car could easily have been towed on the rear wheels on a wrecker and winched onto a flatbed.