Continuity mistake: When Rebecca makes her boyfriend strip, you can see the gun's laser on his hand before she comes around a corner and points the gun at him.
Continuity mistake: When Lori is shoved down the pipe, check out the close-ups as she slides down. At least twice she has one blue eye and one green eye - though her eyes are blue in every other scene.
Continuity mistake: The Tank alternates between having a silver machine gun to not having one, to having an Uzi 9mm, to having a 40 caliber.
Continuity mistake: Lori had two stolen tanks to convert - a Russian T-55 and a PT-76. The outcome of this conversion is a M3 Stuart with a turret from something bigger - Sherman Firefly or M60. Better than McGyver.
Continuity mistake: When Rebecca is lowered into the pipe, the cut on her forehead has no bandages. When brought out, she has two bandages on the cut.
Continuity mistake: When first shown, the converted tank has a red ball with Curly Howard's face on it. When attacking the WP truck later, the ball is yellow.
Continuity mistake: As Kesslee pops off the cup portion of the collector, a goodly amount of water falls out. When he holds the cup up, there's more water than there should have been.
Continuity mistake: As the water is drained out of the man on the floor, you see Kesslee's feet have shoes on. After he gives an assignment to Sgt. Small, he has bare feet without taking off his shoes.