When Barb is fighting Kreb's bodyguards, one is walking thought the hole in the mattress (just before Barb kicks him, and he then attacks her with a chair.) In one shot you can see the floor of the room that the bodyguard is approaching - it is totally covered in small feathers from the mattress. But in the next shot as he enters the room, the floor is now free from feathers.
When the Woman in Torture Room is being electrocuted, in close-up shots, her mouth is open as she screams in pain. In the next shot, her mouth is closed while she is in mid-scream and then she opens her mouth while screaming.
When Barb is saving the girl at the beginning she has to break a window so she throws a chair through it. Then she takes out a grappling hook and clears the extra glass but in the next shot the grappling hook is gone. The grappling hook then returns in the following shot.
After retrieving the memory of one of Schmitz's men, as the Directorate Colonel is talking about capturing Cora D, he picks up a metal tool which is covered in blood on the end. But then as he holds it the end of the tool is completely free of any blood. When he places it back on the tray, blood is still on it once again.
There's a scene at the Hammerhead before it opens where Barb is lying down at a booth and she puts her empty glass on the table. The ice is almost all melted but in the next shot, a close-up as she pours herself some Wild Turkey, the glass is filled with new ice.
When Barb is fighting Krebs' bodyguards she opens the refrigerator door and throws one of the bodyguards into it. He lands halfway in so she closes the door as much as she can and shoots the guy twice through the door but in the next shot the bullet holes have disappeared. A few shots later however the bullet holes return but this time there's three instead of two.
When Barb goes to see Big Fatso with the lenses, she's got three ammo belts over her shoulders. The one over her right shoulder is under the two that are over her left shoulder meaning that she'd have to take off the two that are over her left shoulder before being able to take off the one that's over her right shoulder. Then Willis arrives with the Congressionals and he tells her to drop her weapons. When he tells her this, the ammo belts have switched places. The one that was over her right shoulder which used to be under the other two ammo belts is now over the other two ammo belts. Then in the next shot, as she's dropping her weapons, the ammo belts return to where they originally were.
When Barb is with Big Fatso, the Congressionals/Police all drive in, surrounding the place. In one shot we see a Congressional van pulled up beside Barb's battle van, and directly behind the Congressional van is a police car. But then there is a close-up shot of another police car pulling up behind the Congressional van. In the previous shot there was no space at all for another vehicle to pull up in.
When Barb is fighting Kreb's bodyguards, as she fights with the second one, she boots him to the floor, and them stands on his crotch. The bodyguard has blue suspenders on. In one shot one of his suspenders is unclipped and is lying across his body. In the next shot the suspender is now neatly clipped back onto his trousers. In addition the gray jacket he wears also changes position.
When Barb arrives on her motorcycle after Axel has crashed the van, she takes off her helmet but before she does she lifts up the visor on it. But when she puts it back on, the visor is back down even though she didn't touch it.
When Cora D and Axel are hiding in the back of the car and two people are driving them, the cops then pull in, surrounding them, and the car's wipers are clearly on. But later in the scene, between shots, the wipers are suddenly off.
When Barb fights Kreb's bodyguards, one throws a chair at Barb, which misses, and hits a shelf. The shelf falls down onto a trolley-table, which is to the left of the shelf. In the next shot the trolley-table in to the right of the shelf. One shot is probably flipped.
When Barb leaves the table where Willis and the Directorates sit, we can see the table is covered with loads of glasses. But in the overhead shot when the waiters brings their meals, there aren't any glasses on the table.
When Woman in Torture Room is being electrocuted on the table, Colonel Pryzer is touching the screen which a head is reflected in.
However, in the next scene, he is touching the screen which her status is momentarily reflected in.
When Barb shows a license of prostitution while posing as a hooker, it says "Good Health as of: 1-07-19." The film began in 2017, but it is subtly implied that over a year passes from the shot of Barb looking out at the city from the car until the torture scene, so it could be 2019 by now.
When Barb repels down the wall on a rope after rescuing the girl, before they go out the window, you can see Pamela Anderson's roots showing, where she hadn't colored her hair. In the next scene, viewed from above, it is obviously a stunt person wearing a blonde wig, as there are no roots showing.
The goof items below may give away important plot points.
In the final fight scene, when Axel hits the Directorate soldier off the platform, he elbows him on the back. The shot immediately goes to him falling off in a forward-facing back flip. It would be impossible to hit him off like that.