When 5 armed thugs came out of the van, children saw them and started to run before they began to shoot. However, one girl among children didn't turn around and didn't see armed people but she started to run anyway.
During the shootout in the garage, when Nico drives a car, his front-right tire gets punctured in the gunfight. Afterwards the front-right tire is whole again, but the front-left tire is damaged instead.
(at around 17 mins) Nico walks from the bar. The man he was fighting with follows him outside still holding his nose. Inside his nose was bleeding all over his face. Outside there was no blood on face.
When Nico is backing up in the parking garage shootout near the end of the movie, the character Salvano is on the back of the car as it crashes through the building wall. As Salvano falls you can easily see it is a dummy falling.
The goof item below may give away important plot points.
Shortly before forcing Agent Neely to jump into the water at the beach, there is a sailboat behind both Neely and Nico. When Neely makes his way to the water, the boat is miles further out then it just had been seconds before.