Continuity mistake: Kaiser-Friedrich Museum: In the building where you find the Mosin, there is a window directly over the truck on the next floor. By that window is some luggage. If you look directly at the corner while standing by the luggage, there is no light on the ground by the luggage. But if you turn Karl slightly to the left to look at the wall where the window is, suddenly light appears on the floor in front of the luggage coming through the window.
Continuity mistake: Kaiser-Friedrich Museum: At the door way of the first checkpoint, if you turn around and look at the wall next to the window standing more towards the wall on the left, you see light on the wall in a small spot that is in front of you by the other doorway. If you move Karl over just a little bit to the right, the light disappears on the wall. And it is not Karl blocking the light.