Visible crew/equipment: Near the end of the chainsaw sequence, a crewmember's hand is visible on Krug's back.
Continuity mistake: Several characters say that the train leaves from Shanghai. But the caption at the beginning says that the starting location is Peking (which is in fact where the real Trans-Siberian Express did depart from).
Continuity mistake: With 2:30 left in the movie, Louise shoots the werewolf 3 times. After her first and second shots, we see the werewolf and there is no blood. When she shoots him the third time, three bloody bullet holes appear at the same time.