Continuity mistake: Just as the guy is about to leave the basement we see the basement door is halfway open. We then get a closeup of the freezer and the camera cuts back to the previous angle, only now the basement door is open wider.
Continuity mistake: Lauren drags Owen's chair through 90° to get him to go upstairs. They leave the chair at the new angle. A few minutes later the chair is tucked under the table neatly despite no-one touching it.
We see the mob boss at the start shoot a man from inside the SUV with a shotgun. However, the windscreen doesn't get affected in any way. A shotgun blast in a confined space has a spray and would have hit the glass.