Continuity mistake: When Joe and Oleg are in the hockey rink, the men shove Joe down on the ice, and the hockey players slap pucks into his face, causing him to lose a lot of blood. Problem with this is, the pool of his blood changes position a few times in the scene. It goes from right under his nose to farther down by his neck or shoulder.
Continuity mistake: In the scene in the ice rink, when the mobster has the shotgun to Joey's chest, the mobster spots Oleg, who is pointing a gun at him. When the camera is facing Oleg, he is holding the gun with one hand. Then, the camera cuts to a shot of the mobster. In this shot, we can see that Oleg now is holding the gun with two hands. The camera cuts back to a shot of Oleg, and now he is only holding it with one hand again.
Continuity mistake: In the beginning part of the movie when Joey is driving in the car with Oleg, they come very close to hitting a man on his bike. At this moment, Oleg says, "We're gonna crash". Later, at the end of the movie, at this exact spot, Oleg does not say this. He should, seeing as this is basically a flashback of what had already happened.