This is not a instant kill but it is a great charger spot. It is very easy to hit the survivors as it’s a narrow pathway and you are guaranteed to incapacitate your main target as you will charge him right off of the roller coaster. This charger takes place after the survivors run up the initial part of the roller coaster and come around two the second part where they must travel up the coaster (1st if you do not include the initial climb). To give you a better idea of how it is done you may watch the following video.