Continuity mistake: Near the end of the Claire A scenario, when Leon is encountered on the security monitor, his uniform isn't bandaged as a result of the gunshot wound he sustained from Annette.
Factual error: With the special key, Claire can alter her clothes to a costume that is equipped with a Colt Single Action Army. But still she can fill it with 9mm parabellum which would be impossible.
Other mistake: In either scenario of Leon, when you enter the car park and meet Ada for the first time, she'll ask you to help her move the van blocking the way. On the side of the van, the word Emergency is spelt as 'Emergencey'.
Other mistake: In either scenario of Leon, when you enter the car park for the first time and meet Ada, she'll ask Leon to give her a hand moving the truck. On the truck, the word emergency is written as 'emergencey'. It might be a little hard to make out, but it's there.
Other mistake: In the Darkroom with the lights off (so that the flashlight is turned on), when the character stands in front of and faces the light switch on the wall, then turns the camera so it is in the doorway between the two rooms, you will notice that the flashlight beam passes through the wall, and doesn't go all the way to the back of the room. Not sure if this is the only wall that does that, or if all walls have that property, but I find it interesting.
Audio problem: During the beginning. Leon is heard messing with his car radio, but his hands are nowhere near the radio.
Continuity mistake: Sherry is found hiding in the art display gallery adjacent to the chief's office. However, the hallway is blocked by a wrecked helicopter, meaning it wouldn't be possible for her to get in and out. In addition, she is seen outside the STARS office early on, meaning that she couldn't have been hiding there the entire time.
Suggested correction: While it's true that the chief's office was blocked by the helicopter wreckage, we do see Sherry squeezing through small holes that would be impossible for an adult to fit through. It's very likely that she used the ventilation shafts to slip through the police department without being spotted. Even if it's not visible, there's still a good chance that Sherry used a ventilation shaft to get to the chief's office.