Revealing mistake: The Ukranian woman's body by the stairs keeps changing positions all the time (depending on the angle), despite her being dead.
Revealing mistake: When Bobby feels provoked by Tony and gives him the first punch making him fall from the chair, Tony is then shown getting up. If you look very carefully, that shot actually shows Tony falling instead, so they reversed it to make it look like he was going to get up. (00:27:24)
Revealing mistake: When Tony and Bobby are fighting at the cabin, Tony pushes Bobby against the glass door, which has a pre-break section visible right before Bobby crashes into it. (00:27:27)
