Continuity mistake: Just before the Paratroopers are about to make the jump on D-Day, they hook up their static lines, including Boyce. When Boyce is pushed out of the aircraft by Ford, his static line is stuffed to the back of his parachute.
Continuity mistake: A-X-L frequently varied in size. For example, sometimes its head looked massive compared to Miles, being about the size of Miles from his head to waist. Other times, A-X-L's head looked about twice the size of Miles' or Sara's head. A-X-L's body was sometimes about the same size of Miles' motorcycle but much larger other times. A-X-L looked much smaller when it was dragging Sam compared to when it was standing over Sam.
Continuity mistake: When the boy is given the gun and bullets so he can go and find a temple to cure his mother, he has a handful of bullets and one slips down and falls into his sleeve, partly sticking out. It cuts to his face and then back to his hand from a different angle. He has his hand cupped still but you can tell it's empty with no bullets in it. Also his gun keeps changing positions in his other hand in each shot. From pointed down, to pointed straight up, to pointed to the side. (00:17:15)
Continuity mistake: The Stalker, "Shrike," is a persistent hunter, but not terribly quick on his feet. He's sort of a lurching, Frankenstein-like cyborg who is always pursuing Hester Shaw at about walking speed. When Valentine frees Shrike from Sharkmoor prison, miles out to sea, we see Valentine in his airship destroying the prison and we see Shrike's prison cell sink to the sea floor. This cuts to a long distance shot of the prison exploding and sinking in the far background, miles away, as Valentine's airship comes sweeping from the far background into the foreground and out of frame. Almost immediately, Shrike emerges from the surf in the foreground and slowly trudges ashore, implying that he somehow travelled miles across the sea floor just as swiftly as did the airship, in a matter of moments, despite his slow, lumbering gait. (00:47:40)
Continuity mistake: In the car at the start, when Hamilton says it's like the fourth blackout today, Michael corrects her and says it's the fifth. When he says this, he is leaning forwards some as he looks up out the windshield with his mouth partly open. It cuts to a different angle and suddenly he's leaned back in his seat fully and his mouth closed. (00:01:30)
Continuity mistake: In the first WW2 flashback the protagonist is handing the various items to the Nazi doorman. When he puts down the pen, he is doing it with a left hand in the table close-up, but he picked it with his right, as the left arm is busy holding the coat. (00:02:05)