Factual error: Budapest didn't exist in 1489. The cities of Buda and Pest weren't combined until 1873.
Factual error: When Jamie and the cop are in the room upstairs and Michael is breaking through the door, The cop shoots ten shots out of a revolver without reloading.
Factual error: In relation to the position of the sewage workers shadow, and the way Jason kills him, there is no way that the splatter of blood would have hit the wall the way it does. In addition the blood looks like paint. (01:27:20)
Factual error: As Toxie is removing the guy's intestines with his bare hands, you'll notice that there's absolutely no blood on the intestines.
Factual error: An animal that lives in the deep sea cannot live in the open air above the water.