Revealing mistake: On the ice the tank is firing - in slow motion we see empty shells are littering the area. The shells have crimped ends, revealing them to be blanks.
Revealing mistake: The ship set up for the capsize scene is supposedly mid channel and heading for England when it is bombed by the Heinkel, but it is at anchor.
Revealing mistake: When the FBI agent is in the room of the court medic to get the cause of death, in several shots the sliced up corpse is breathing. (00:27:00 - 00:29:30)
Revealing mistake: During the car chase when the car gets hit by the truck and goes into slow motion you can see the roll cage inside the car.
Revealing mistake: After Rey lifts the rocks away from the back exit of the bunker, you can see C3P0 briefly as he bumps into the rock in front of him while exiting the cave, and the rock moves slightly. Also, the rocks that fell over the exit don't match the surrounding terrain at all while piled up as they are smooth like river rocks, but when we see them lifted up by Rey in the subsequent scene, they are rougher and look nothing like they did before (as well as being pretty lousy CGI). (02:16:47)
Revealing mistake: During the fight in the forest with Heimdall and Hela's soldiers, he uses the sword but the tree is cut before the hit, and the soldiers on the right fall before the hit too.
Revealing mistake: When Dukhovish lands on the car, the (CGI) smashing of said car is incorrectly timed with the impact.
Revealing mistake: In the beginning of the movie, when John get his Mustang, he starts accelerating deliberately to hit one of the cars (black sedan), but right after the odometer scene (where you see the gas going up) you actually see the car is stopped. It is pretty obvious. (00:09:30)
Revealing mistake: When Taserface is threatening Rocket, Rocket is making eye contact. Taserface, meanwhile, is looking at the space between Rocket's ears.
Revealing mistake: During the bank chase at the beginning the bottom plank is a material skirt which moves forward and backwards revealing in some shots the wheels underneath the bank.
Revealing mistake: During the underwater scenes the light appears from below and above but it's underground and should be pitch black, suggesting studio lighting being used.
Revealing mistake: When Hennessy is confronting McGrath, he shoots 3 bullets from his pistol and also hits him in the face with the butt of the gun. There is no magazine/clip in the pistol. (01:19:30)
Revealing mistake: When Will and Danny are walking in the woods to go deer hunting, it is raining on the right half of the screen but not the left. (00:19:04)
Revealing mistake: Right at the beginning of the movie, an alien blasts Lieutenant Smalls and he drops his rifle. The weapon wobbles, revealing it's a rubber prop rifle. (00:01:55)
Revealing mistake: At the beginning as Noah's vehicle is reaching the edge of New America, there is a shot of a drone swooping down over a hill to follow him. As the drone comes onto screen, there is dust and debris animated to come up at the camera as it blows around its environment. However this small bit of superimposed bad special effects is the only thing it seems to affect. It swoops down right next to some tall dead grass and other plants, on a dusty hill. But not one item of the real environment is blown or even moves in the slightest from this drone passing by it from inches away. (00:01:30)
Revealing mistake: When Richard and Stan are driving across the desert, there is a shot of Stan driving the SUV. The number plate and Range Rover logo appear to be reversed and the driver seat is shown on the right hand side instead of the left hand side, revealing that the shot has been flipped. (01:04:40)
Revealing mistake: Xiang storms the CIA headquarters at the beginning of the movie and fights off a dozen of agents and executives. Check out the moment when Toni Collette comically pokes her head from under the table and Donnie Yen kicks two agents. The second agent is charging at him with his fist raised, but blatantly stops with no guard raised, waiting to be spin-kicked into oblivion. He was also seen hopping up but when they get blasted away it's the burly Asian guy who is level with Donnie Yen, not him. (00:09:35)
Revealing mistake: When The Ray lands on the ground regrouping with the other Freedom Fighters, there is a bridge behind him with many civilians walking in the background. The animators took an obvious shortcut here as the civilians in the background just consist of the sprites of about 5-7 different people just repeated over and over again all in their same poses on each copy as they move. One especially noticeable one is a kid walking in an olive gray shirt with his arms up right next to himself over and over again. (00:01:45)
Revealing mistake: When Banderas and co set ablaze the SUV dropping the flaming sofa on it, the man coming out of it is wearing a full fire retardant suit. (00:38:35)
Revealing mistake: When Jon and Ponch are giving chase to the bikers after spotting them from the overpass, they are cutting through by going down the slope, dangerous and steep. Despite being such a daring move, there are already multiple tire tracks on their path. (00:40:25)