Continuity mistake: In the scene where Dunn is collecting gear from the surplus store. The cops show up. When it shows a close-up of the cops in front of the cruiser the wipers are on, but then it goes to a distant shot and they're not on.
Continuity mistake: In the part before one character gets ready to jump off the building, pay attention to the back pack he has on. In one scene he has it on, the next shot, it's not there. And in the very next shot, there it is again.....