Continuity mistake: The position of the dead man's legs, after Barb kills him with the dart-cigarette.
Continuity mistake: After Barb discovers her brother's dead body we see her getting some weapons and ammo. In one shot she puts on an ammo belt but in the next shot she's wearing three ammo belts.
Continuity mistake: When Barb throws the grenade in the air it lands on Big Fatso's stomach just under a giant stain but in the next shot, a close-up of the grenade landing, the grenade lands just above the giant stain.
Continuity mistake: When Barb shows a license of prostitution while posing as a hooker, it says "Good Health as of: 1-07-19." The film takes place in 2017.
Continuity mistake: 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.