Continuity mistake: When Amanda is first shown lying in bed, she is wearing her left shoe, but not the right. When she steps up onto the railing, the shoe is on her right foot, but this looks to be a mirror image, possibly on the sliding glass door - fair enough. But when she's lying on the roof of the car, she's wearing both shoes. (00:02:00)
Continuity mistake: The Christmas illumination on the balcony of Amanda Hunsaker's hotel room is arranged in three different ways: In the first shot, before she takes drugs, it is attached to the side of the railing. When she steps out, the lights are hanging about 10 inches below the railing, like they are later when Murtaugh searches her room. And when she climbs up to jump the bulbs are directly hanging down from the railing. (00:02:40)
Continuity mistake: When coked-up Amanda first looks down from the balcony, we see the ground from her vantage point. Were she to jump from this location, she would land on the huge awning below (the curved dark area). If she put real effort into jumping forward to clear the awning (and she didn't), she'd land just to the right of the lighted sidewalk, onto the grass. And if she were an olympic long-jumper and not high on cocaine, she might have landed on the red or black car parked at the curb. Under no circumstances could she have landed on the gray car, well to her left - yet she does. (00:03:05)
Continuity mistake: Before Amanda jumps she climbs up some steps onto the railing without holding on to anything. However, in none of the earlier shots (or later when Murtaugh searches the room) there isn't anything on the balcony that could have served that purpose. (00:03:30)
Continuity mistake: In the last shot before Amanda crashes on the car, the red car in front is parked in a different angle than when she is lying on the roof. (00:03:55)
Continuity mistake: In the scene where the girl jumps to her death from the balcony, it shows her hitting the car towards the right halfway onto the windshield. Then in the next shot, it shows her lying right in the middle of the roof of the car. (00:04:05)
Revealing mistake: At the start of the movie where the nude woman jumps from her balcony, as she is falling and supposedly getting closer to the car, you can see after a couple of seconds, her body landing on the safety mattress thing, with a print on the top of it making it look like the street with parked cars. You can tell it is a mattress because just before they cut from the shot, the mattress dents inward. This could be taken for the top of the car denting in, except the dent "marks" extend from the sides of the roof of the car, into the bit of pavement beside the car. (00:04:05)
Continuity mistake: The wet patches on the sleeve of Nick's T-shirt change when the family surprises Murtaugh in the bathtub. Actually, when they carried the B-day cake in, the T-shirt should have been dry in the first place as the water battle started only later. (00:04:55)
Continuity mistake: The first time we see Riggs he is lying in bed with a cigarette, almost finished, in his mouth. He gets up and goes to the fridge. When he opens it the cigarette looks like it has hardly been smoked at all. (00:06:25)
Revealing mistake: In one of the first scenes of the movie you see Riggs in his trailer. He walks out of bed smoking a cigarette and taking a beer. When he takes his first drink of the beer some fluid is spilled. If you look at it, it is not beer. It's probably water, but definitely not beer. (00:07:00)
Continuity mistake: When Murtaugh steals some bacon from the tray there is about twice as much than in the shot before. (00:07:20)
Continuity mistake: When Riggs is out one night trying to locate Dixie the streetwalker, he shows her photo to strangers. But if you look, the photo is of an Asian woman. Bears no resemblance to the real Dixie we saw in an earlier scene. (00:09:45 - 01:08:20)
Continuity mistake: During the staged drug deal the items on the table move around. Check for example the little bag with the sample and the can in front of Riggs when he takes his wallet out. (00:11:30)
Continuity mistake: When Riggs is standing in the schoolyard during the sniper scene, he is standing on a large rubber safety mat near the monkey bars. But the close-up of his feet shows he is standing on bare concrete (Director's Cut). (00:13:10)
Continuity mistake: (Director's Cut) As Murtagh later states (and Riggs does not correct him), Riggs' 9mm pistol has a 15 round clip and holds one more 'in the pipe' (barrel), yet when he took out the sniper earlier, he fired at least 19 rounds in a single, rapid sequence. (00:13:30 - 00:27:45)
Continuity mistake: When Riggs is working undercover at a Christmas tree lot sampling cocaine, he agrees to do business with the dealers. After one of them quotes a price, Riggs sits there looking pleasantly surprised. At this point, note how the sky behind his right shoulder is mostly overcast. Seconds later, Riggs shakes his head in agreement and reaches for his wallet - but by now mostly all of the cloud cover has vanished (as if minutes have passed by). (00:17:10)
Continuity mistake: After Murtaugh teams up with Riggs they walk through a parking garage. A police car drives by them twice (at walking speed, with its lights on - in the garage), first in a closer, then in a wider shot, while the dialogue continues, ruling out any artistic intention of this repetition. (00:20:25)
Revealing mistake: When the General holds the lighter under Mr. Joshua's arm there is no smoke from burning hair at all. (00:23:50)
Continuity mistake: Towards the end of the meeting between the General and Mendez, Mendez steps backwards and bumps into one of the General's men. He turns around and makes some jerky moves with both arms. The camera cuts to the General, and we see Mendez in the background colliding with the other guy once again in exactly the same way as before. (00:24:25)
Continuity mistake: When Riggs talks to the jumper his hair is either fluffy or stabilized with gel, depending on the camera angle. (00:30:00)
Chosen answer: He was one of Hunsacker's men.