The audio for the Gatling cannon used by the second Samurai warrior in the first battle scene is incorrect as it uses the effect for a gun with a much lower rate of fire even though initially the movie is going at a normal pace with no slowdown.
While walking down the steps before starting the samurai battle, Baby Doll is wearing heels (at least 3 or 4 inches) however during the actual combat scenes, she's very clearly wearing flats. When she "fights" the last samurai, she's back to wearing heels.
When the priest is dropping Babydoll off from the orphanage, you initially see her signature head band placed behind her pigtails. As it cuts between her and Blue, you see it move to in front of them (probably because headbands tend to slip if not anchored, especially when there's movement involved) where it remains for the rest of he movie.
In the dressing room, when Baby Doll lists the four objects the girls must obtain to escape, she writes all four object in cursive, focusing on the last word "KEY". However, when the camera angle changes during the following conversation the list changes handwriting and the words change from cursive to "block letter". It continues to switch back and forth every time the camera angle changes during the conversation.
Before BabyDoll saves Rocket from the cook, she is scrubbing the floor with a brush and bucket. When they run from the kitchen back out to the hallway, you can see the brush and bucket but the floor is dry.
The break out scene where they are trying to slip past the guard, one of the guards was watching a show on his phone with small headphones. Meanwhile the rest of the movie is set in an earlier period without this technology.
During the castle raid Babydoll puts down her machine gun when approaching the baby dragon. When the mother dragon comes up and the girls retreat, Babydoll's gun is still where she left it. After the girls leave, but before the dragon climbs out of the tower, the camera angle changes and the gun is no longer where Babydoll left it.
A man grabs an old-style metal canister fire extinguisher and immediately begins spraying the fire with it. These extinguishers had to be inverted and the charging pin on top banged on the floor to activate the chemicals and create spraying pressure.
In the dressing room when Sweet Pea, Rocket and Blondie talk about not helping Baby Doll, their movements not matching their mirror images. Doubles are being used. This is done so the camera can move behind them without being reflected.