Other mistake: On the train bridge level in multiplayer, bots can see and shoot through the rails and columns of the side of the bridge as if it's not even there.
Other mistake: In campaign mode, in the level where Bromly drops from a sky light and saves you at a enemy meeting, you can see Bromly spawn. During the meeting, look up at the sky light, you can see an enemy standing on the glass. Keep watching and when it's time for Bromly, you can see him suddenly spawn from thin air in front of the enemy and kill him, dropping him through the glass and him jump down to shoot the other enemies.
Other mistake: In multiplayer, when your character dies, the bots continue shooting at the body until it goes away, unable to understand the character is not alive any longer.
Other mistake: In multiplayer, each of the computer controlled bots have varying degrees in skill and difficulty of different aspects of game play depending on which character is chosen. If a bot is Rickshaw, the accuracy of any gun is so overly bad, that he can have the gun pointed straight at you, and shoot the wall next to him. Basically, the bullet goes sideways out of the gun.
Answer: Donnie Griffin was going to be the protagonist of the un-released sequel. Presumably making him the player character in the multiplayer to this game was a set-up for the sequel.
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