Continuity mistake: At the beginning, in the scene where Rayne finds two bodies near a small house, she takes out one of her blades. Firstly, she grabs it in a wrong way (the tonfa-like blades should be held under the arm), but when the camera angle changes she holds it properly.
Continuity mistake: During the scene in the little church there is a a priest who is speaking with some people. Whenever the shot is from the front, the book before him is open while shots from behind show the book closed.