Continuity mistake: When Nobu drags Matt across the floor, he leaves a massive trail of blood, but in the wide shot of Matt, the trail is gone. (00:48:30)
Corrected entry: Matt is fighting a white guy with a hat in an alley - he breaks his arm and the guy drops heroin bundles. During a quick shot change the white guy is all of a sudden black, with no hat. Then he's a white guy again. (00:17:50)