Factual error: The German woman screams "Nacht Monkey" when Peter jumps off the train, but the German for "Night Monkey" is "Nachtaffe".
Other mistake: When Peter is in a Dutch cell, he is surrounded by Dutchmen who greet him in Dutch at first. Then Peter breaks out of the cell, the Dutch guard hears the lock break and yells to his fellow countrymen "is everything OK with you guys?" instead of yelling it in Dutch. (01:20:00 - 01:20:30)