The faqs are not helping. I wiped out the 4 guards for the 50 th time. I go through the door with the laser grid (pulsating) However as i just move one inch in from the hall I trip an alarm. I thought I had to be carefull a few feet intop that corridor as to not trip the lasers. Am I tripping something else. lights are out in the hall so the camera should not be a problem. Help!