Corrected entry: Will Sawyer climbs the framework of a construction crane to get above the fire on the 96th floor. Even without a prosthetic leg, it would have taken a very long time, which isn't accounted for in the time flow of events.
Corrected entry: Will Sawyer puts his wife and son in an elevator - he is going to cut the cable that would put them in a free fall traveling through the floors that are on fire. He instructs her to pull or activate the brake (or magnets in this hi-tech elevator) allowing them to escape the burning building. Given that they are above the 90th floor the acceleration of the free falling elevator would create a force so great that it would essentially push them to the ceiling, which would put this lever completely out of reach.
Correction: They would float.
Corrected entry: When the lead character and main villain are fighting at the end, they have a conversation where the villain thinks the hero is standing in front of him because of a mirror. However, if the villain could hear him speak, he'd know the hero was behind him.
Corrected entry: He jumps through the turbine blades, but he is attached to a rope that would have been caught up in the spinning mechanism.
Correction: He put the rope around a small pole thing before he jumped.
Correction: The crane was on the top of the building, where Will arrived via elevator. He only climbed 10-15 floors up, not 96.