Left 4 Dead 2

Close to the elevator the Survivors must take in the first chapter of Dead Center there is an excellent instant kill that can be done by the Charger. As the Charger you can wait until they are about to enter the elevator, or you can wait until the approach the elevator room from the long hall way that they must take to get their. Once they do and are lined up with the window close to the elevator you can charge them straight out of it. This is a great instant kill because it does not look like you will be able to get them out of the window due to the 2 feet of wall before the window starts. This instant kill can catch many teams off guard. You can view a video of it being performed below: