Revealing mistake: The bad guy that Nady punches and falls through a hole is a very obvious mannequin. Watch for the close-up of the hand.
Revealing mistake: In the dream sequence while Bruce is now the Hulk, if you look closely beneath his green wig, the black hair of the actor is visible.
Revealing mistake: When the Russians are in the Finn's trench, you see the Finns stabbing the Russians. If you look carefully, on a few of the Russians you can see protection visible. (00:48:45)
Revealing mistake: When Briar is reloading cartridges in the flop house, he's removing powder from an already spent shotgun shell. The primer is indented.