Revealing mistake: In the mansion, Matrix jumps to shelter in some flowers and the mat he lands on is noticeable because he bounces and parts of it become visible. (01:12:10)
Revealing mistake: In the siege at the end, there is a shot where you can hear the squibs (small charges that explode on a stuntman to make it appear he was shot by a bullet) going off on one of the soldiers as Matrix shoots him. (01:13:10)
Revealing mistake: The scene with the shack has many mistakes, but only if you play it in slow-mo. First, he throws the circular saw at the guy in the window, the saw is moving on wires and he has a hairpiece someone just pulls off with a wire. The next guy he stabs with a pitchfork, and Arnie just lightly stabs him and the guy falls forward holding onto the pitchfork to make it look as though he was stabbed. Arnie then throws a saw at a guy hitting him in the chest. The guy actually just catches the saw in his arms in a way to make you think he got hit. Then Arnie swings some sort of gardening tool into the genitles of a man, but he actually stops it before it hits the guy and the thug just holds onto the handle. Finally, Arnie hacks off the forearm of a another man. You can tell that his arm was fake from the elbow on. (01:15:15)
Revealing mistake: At the end of the fight between Matrix and Bennett, Matrix throws a pipe through his body into the steam duct behind him. However, immediately after he is pierced by the pipe, we see Bennett slide about half a foot down the wall, which would be impossible with the pipe lodged in behind him. (01:24:00)
Revealing mistake: During the airport scene involving the thug, Cindy and Matrix, the same extras are seen walking around the place over and over again.
Suggested correction: According to this site's rules, if you have to use slow motion to see something, it's not a valid mistake.
Sacha ★