One of the shotguns is a sonic shotgun and can operate in space. Since sound cannot travel through a vacuum, sonic weaponry would be rendered useless in space.
During the 'Burn Water' mission, the dropship enters at a completely vertical angle. This angle would cause any ship of any size to burn up in any appreciable atmosphere.
In the Geneva level, enemy drop pods appear from nowhere to drop down.
The view from the scope on at least one of the rifles is not consistent with he outward appearance of the rifle, with a cord being visible through the scope which isn't present on the rifle.
During the 'Burn Water' mission, the Player dons a helmet. However, from the Player's point of view the helmet doesn't go over his head.
The buildings in the 'Burning Water' mission are not equipped with air locks.
In the 'Burning Water mission, the tank is called an 'APC' in the subtitles.
Whenever depressurization occurs on a ship, the artificial gravity inexplicably fails. This should no happen, as artificial gravity and air pressure are two different things.
After disabling a carrier's engines an alarm can be heard. While it could be considered that this would have been broadcast on radio frequency, the alarm grows quieter with distance, indicating an external source - and sound cannot travel through a vacuum.
A corvette is sometimes called a fighter even though it is a completely different class of ship.
News stations somehow manage to air footage from battles that the Player has fought in. This footage would invariably be classified in a wartime scenario and would not be released to the public.
The 'Burning Water' mission is mentioned in a news report as having taken place on the first day of the war, even if the Player decides to do several missions before it.
Spaceships are called 'airships' even though an airship is a completely different concept.
Chief MaCallum states that a lift to an orbital platform is 100 kilometres away. If it was that far away, it would not be visible.