Plot hole: When the team are trapped in the lab corridor, Nicholas uses the code 90258 to stop the countdown. Trouble is, in that timeline Nicholas was a tech soldier, not a scientist so the code would have been set by someone else, and not by him. His code should never have worked. (Time)

Plot hole: When the first sterilisation unit encounters Nicholas in the desert, he commands it to 'cease operation' and it becomes harmless. There was no reason why he couldn't have used the same command later on in the movie when he encountered deadly robots, particularly when one was teleported to the lab. (Time)

Continuity: When Natasha is shot by the robot, the shot travels right through her, like a normal bullet would. Yet in every other scene when the robots use their pulse cannons, including when Rasheed dies, the shot always causes an explosion. With Natasha, no explosion was seen or heard. (Time)

Continuity: When the sterilisation unit finds Nicholas in the desert, when he stands up and the robot is looking at him, there is a lot of debris around him. When he says 'cease operation' the debris disappears. The rock face behind him changes position as well. (Time)