Revealing mistake: While Contini's train speeds along the railroad tracks, in the train's cab when Contini opens the floor's trap door before Freya walks in and later when Matt pushes Contini through the open trap door, there are closeups of the ground below and there are no railroad tracks whatsoever.
Revealing mistake: After Freya and Matt escape from Contini's chateau and are flying in Matt's chopper, we can see the shadow of their chopper being cast on the ground below, but the problem is that Matt's chopper looks nothing like that helicopter's shadow.
Revealing mistake: When Matt and Freya are attacking the compound, at one point he goes outside and throws a "hanky panky" grenade at what looks like a garage door. He throws himself over a hedge and a moment later the grenade explodes. When he is getting up, the "ground" is obviously a cushion covered with fake grass.
