Factual error: When we first see Kurgan in modern day New York, he begins to assemble his sword in a motel room. The very fact that he is assembling his sword the way he is, snapping segments together, especially the blade itself, which is segmented in the middle, would make that quite possibly one of the weakest and most inefficient weapons a person could ever wield. Being that it is segmented the way it is, it is structurally weak, and a clash against another sword, or any hard surface for that matter, would break the segments apart easily.
Factual error: The marine unloads his Uzi at Kurgen, about 10 seconds of full-auto fire. The Uzi fires at 600 rounds a minute, so can only fire for about 3 seconds (with a magazine the size he's using) before running out of ammo.
Factual error: When McCleod jumps into the ocean, his kilt catches the wind. We then see that he is wearing an undergarment. Scottish men don't wear undergarments under their kilts. (00:48:15)
Factual error: When Connor and Kurgan fall through the roof at the end, they fall way too slowly than they would in real life. It takes them about 10 seconds to hit the floor in a building that looks about 30 metres tall.
Answer: The Director, Russell Mulcahy, started his career making music videos. He was known for using fast cuts and tracking shots.