Goofs

When the killer drives the car against the door, we see the main character attempt to open the door, and succeeds a few inches. Yet later, the room fills with water as if completely sealed, and no characters think to try the door.

The killer moves the car right up against the ATM's door to stop the people getting out, but later when seeing the CCTV views from inside of the ATM there is no car visible.

From 1:06:00 to 1:06:10 The flyers reappear after David puts them into the burning metal jar.

At 00:30:00 Emily takes off her right earring and then takes it off again instead of the left earring.

From 00:09:51 to 00:10:50 Emily's glass of wine goes from being empty to half full to empty again while she is talking with David.

The hose would have been frozen solid at that temperature and wouldn't flex.

Around 1am, the conversation turns to how no one will survive due to freezing to death. Even at -3 degrees, in an enclosed space, anyone can survive until daylight which was around 5 hours away.

The temp outside is supposed to be sub zero Fahrenheit. Yet the breath of the characters is only barely visible in one shot. Temps that cold would cause breath to be VERY VISIBLE the entire night.

The killer cut both the power supply wires on both sides of the electricity usage monitor, yet at the same time power was on in the ATM room. There was no fluctuation in the lighting or loud noise as would be evidenced by an external generator, and every device that would be powered by said electricity was working as it should.

Some of the extras walking on the street in the opening scene are staring into the camera. A few of them actually look at the lead character for no apparent reason.