(The Sacrifice map is needed.) 1. First you gotta be bill the survivor to do this. 2. When you have all the generators turned on and finished go to the bridge you will see that the one generator is needing to be turned on again. 4. jump off the bridge and run to it fast, it would be better if you threw a molotov first. 5. once you have turned it on you now have the achievement! I hope this helps everyone.