Character mistake: As the other cops get to Mike and Steve, the lady cop stands and starts shooting at the mercs with her assault rifle, which appears to be an M16 variant. It is obvious the actress playing the cop has no idea how to actually hold a weapon, as it's resting right up against her cheek with the butt of the rifle barely against her shoulder at all, and she has her eye right up against the sights where it would slam her in the eye with recoil. (00:58:15)
Character mistake: The tour guide inside the "Degenerate art" exhibition ridicules the 'child-like' paintings of the likes of Mondrian and Kandinsky. In particular he stands in front of Kandinsky "Upward." The German name of the work is "Empor", but the tag says "Empore." (00:03:40)