Nightmare Freddy: His Freddles will appear around the office. Shine the flashlight at them to make them go away. If you let too many accumulate,he will get you. 

Nightmare Bonnie:He will suddenly appear in your office. Buy his plushie from prize corner to make him go away.

Nightmare Chica:She will try to get you through the vents. If you hear her breathing,close the door.

Nightmare Fredbear:He will try to get you through the left door. If you see his eyes,shut the door.

Nightmare:He will try to get you through the right door. If you see his eyes,close the door. Be careful. He lingers for a bit after.

Jack-O-Chica:She will appear at both doors if the office gets too hot. Closing the doors won't have any effect,but cooling the office down will.