Other mistake: As the Terminator is approaching Sarah in the Tech Noir nightclub, several other patrons can be seen behind her sitting in booths. These same people are in front of Kyle (he pushes them out of the way to get to Sarah before the Terminator does), yet he's on the other side of the club by the bar. (00:35:10)
Other mistake: Why does the Terminator have a HUD (Head-up-Display) or a GUI (Graphical User Interface)? This is a stupid mistake in many movies with cyborgs or androids. A machine itself does not need a HUD. A HUD is an interface for humans to help us interact with machines. A machine does not need a graphical interface to interact with itself. A machine can interpret the reality around internally using machine code within its CPU using zeros and ones. There is no need to project a HUD in the eyes of the terminator. (of course it looks cool and the viewer gets the information that the Terminator is a machine, but in reality it would be - let's say - a stupid redundancy to build in a monitor into a camera).