NPC flashlight beams are thin, while the projection on a surface is wide.
The nailgun ammunition display goes to full before the Player has even finished loading.
Radio chatter indicates that a demolitionist was 'finally' found, and it turns out to be Corporal Rhodes, who was already present.
It is possible to take weapons from NPCs that have apparently put their weapons down to work on something. This, of course, would make no sense since it would be stealing.
The maximum amount of ammunition for each weapon should be a multiple of the maximum amount of ammunition in a magazine, but this is not always the case.
In spite of being the same model, the Player's railgun and those of the enemies' have different beam colours.
The maximum ammunition limit of weapons should be a multiple of the maximum magazine capacity, but this isn't always the case.