Continuity mistake: In one scene after Hutch is beaten up on the bus, he has no facial injuries. Then in the next scene, they are back.
Continuity mistake: In the 1978 flashback scene, Michael does not have 6 bullet wounds in his chest from when Dr. Loomis shot him moments earlier.
Continuity mistake: When Gilgamesh hammers the Deviant into the gates of Babylon, dealing the last strike after the dramatic pose, the shadows cast by the statues don't go much further away than their pedestal. In the following long shot the 5 Eternals have a massive area of shade behind them that extends very far away from the city walls. (00:21:30)
Continuity mistake: Doc Ock is supposedly from Spider-Man 2 yet here he's gained a sweatshirt or turtleneck whereas in that movie he didn't have one. It's made clear he was pulled from his timeline just before his death, so he should be wearing the same thing.
Continuity mistake: Toward the end of the film Ruby says goodbye to her family and gets in the car to head to college. The car pulls away from her home and drives for about 5 seconds when Ruby yells "stop the car". She exits the car which is positioned nearly exactly where it was when they started on the families' property.
Continuity mistake: James Bond was wearing a black tie when he visited Vespa Lynd's grave. This was still evident when he knocked Cyclops off his motorbike in the following action sequence. During the fight as he grapples with Cyclops, not only is the tie missing but the top few buttons of his shirt become undone.
Continuity mistake: In the desert digging, the Nova's trunk is open, then shut. (01:42:00 - 01:45:00)
Continuity mistake: During the opening scene when the family is driving down the road, a newer McDonald's can be seen on the right-hand side.
Continuity mistake: The right side mirror on the car is broken off by a tree in the maze, then returns. (01:06:20)