Continuity mistake: When Nancy is dancing, she is alternately wearing/not wearing gloves between shots.
Factual error: When Marv is talking with the Priest in the confessional, he cocks the hammer of his pistol as a means of interrogation. But in the next shot, the pistol is uncocked, without sufficient time for this to occur. In fact, the pistol is uncocked even when Marv shoots him. This cannot happen, since his pistol is a standard 1911 .45, which requires the hammer to be cocked in order to fire.
Continuity mistake: When Lucille throws the pills to Marv, he catches it with his left hand (while holding a cigarette in his right hand). The shot changes immediately to a close up on the pills in Marv's right hand. Then in the next shot Marv takes the pills, but has to take the cigarette out of his mouth first.
Continuity mistake: The blood on Marv's chin appears and disappears when he's being interrogated by Wendy and the girls.
Revealing mistake: When dead Jackie Boy is talking to Dwight, you can see his normal neck under the fake slit-throat neck, and once or twice, you can even see a little device that was meant to shoot out smoke from a cigarette in the fake appliance.
Revealing mistake: When Marv is starting to dunk the man's head into the toilet, trying to get more information, you can see the rim of the toilet flex slightly from his weight.
Factual error: In the scene where Bruce Willis is confined in the hospital, where he is talking to young Nancy, a volume respirator can be heard, yet Willis is not intubated and no other paraphernalia are attached to his larynx and only intravenous lines are present.
Continuity mistake: When Marv is interrogating the priest, in one of the cuts, his finger goes from being above the trigger, to being right on the trigger.
Continuity mistake: When Marv and Wendy are driving to the farm to take out Goldie's killer, Marv is smoking a cigarette, and it's in his mouth, but when the camera cuts to a close up of their faces, the cigarette is in his hand.
Continuity mistake: Dwight is tossed into the tar pits and submerged. In the next shot however, his head is back above the tar, and his face is fairly clean.
Continuity mistake: The amount of cigarette burned up in the scene with Marv and Lucille in the bathroom, changes several times.
Continuity mistake: While Dwight is searching Jackie Boy's corpse, the blood around him changes once or twice. It goes from no blood, to some blood, to no blood, to a whole giant puddle full.
Revealing mistake: In some shots towards the end when it's snowing, you can see the snow (computer generated) simply disappear, especially in over-head shots. It isn't hitting the ground, it just disappears.
Continuity mistake: The amount of blood spewing from Jackie Boy's arm, after his hand is cut off, changes between shots, just before Miho kills his friends.
Continuity mistake: When the female Irish assassin sees Jackie Boy's dead body, in the first shot she is starting to grab the window of the car, but in the next shot, her hand is no longer holding onto it.
Continuity mistake: After Jackie has sat down on the swastika-formed throwing weapon, he is shown crawling on the ground. The swastika is then shown sticking out of his buttock in a horizontal position to his thigh. When he is leaning against the trash can, the swastika is shown again, but this time it sticks out pointing downwards (in relation to his thigh), at a 90 degree angle from it's original position. The points on the blade would have kept it from twisting in the wound, and Jackie did no movements that would cause it to twist.
Continuity mistake: When Yellow Bastards "weapon" is taken away, the position of his head changes between several shots. He goes from looking at Hartigan to leaning back screaming between some of the shots.
Continuity mistake: When Lucille says: "Settle down Marv, take another pill" her head goes from being slanted in the previous shot to being straight up.
Continuity mistake: When Hartigan is being beaten before going to jail, there is a close-up of his face. There is a five-inch long, one-inch wide rip in his right cheek. Even though he has scars already on his forehead, this damage just disappears afterward.
Continuity mistake: When Yellow Bastard is holding Nancy inside the farm, squaring off with Hartigan, the arm holding the knife keeps changing its distance from Nancy, shot to shot.
Chosen answer: I think we can safely assume that "The Man" kills Becky in the elevator, yes. But unlike the first woman, Becky had done something to piss off a lot of people (basically betraying all the girls working in Old Town), and they sent him to eliminate her.
Twotall