Okay so my friends and I have been trying to get this achievement, we have spent probably about 4 hours trying to get. We are trying to do this in the lower rounds (1-5) but most of the time it doesn't happen because of stupid crawlers that we make dieing, and another being not getting the EMP grenade right away. But half an hour ago we got everything good we were on round five had a crawler, two of use went to the pylon put down our turbines by the table, the other two went to the other spots and placed there turbines down. Now we already turned the power on and then off again, but our problem was the damn lighting dude didn't show up for us to do what we needed to do. Does anyone know why this could be?