Other mistake: When the Goldeneye is first fired, watch as the planes collide and then explode, one at a time. The plane that blows up closest to the camera is the exact same explosion, debris and all, that occurs when the second satellite is destroyed at the end of the film in space. (00:39:00 - 01:57:00)
Other mistake: When Natalia is messaging Boris for the first time, the keys she is pressing are not what appears on screen. For example, watch closely and she hits 2 buttons at the same time which when you compare it to a keyboard is the letters "p" and ";" However, the ";" never appears on screen. (00:55:00)
Other mistake: It's quite convenient for the plot that Natalya knew about both Goldeneye satellites but never seemed to know where Mischa was operated from otherwise she and Bond could have gone to Cuba without having to spike Boris' location.
Other mistake: When Xenia's helicopter crashes the pilot vanishes.
Answer: "Don't even breathe. Where are the others?"