Factual error: In the fighting scene in U-Bahnhof Alexanderplatz the underground trains move much faster than in real world. Alexanderplatz is a railhead station. The trains would either crash into a wall or would not have enough room to accelerate that fast.
Factual error: In the American Embassy scene, when 47 opens his jacket for the security guard, the base plates of the magazines loaded in his Silverballers are marked as .38 Super. The Silverballers, however, should be chambered in .45 ACP. His spare magazines are marked as .45. (00:27:05)Nitzan Shinnies
Factual error: The Marines in the embassy scene had their BDUs pants stuck into their boots when in reality Marines blouse their pant bottoms around the top of the boot.
Litvenko: You're a bastard.
John Smith: I know.
Litvenko: No. You don't. You're a result of inferior technologies. A failed experiment. An Agent's advantage is not his body, John Smith. It's his mind. You will never be as good as him.
Katia: You're a monster, you piece of shit you! I should've kill you.
Agent 47: Yes, you should but you won't because you're weak. You're nothing more than a scared little girl, who's only real gift is running.
Katia: Damn you.