Here you can find recordings of all gameplay on our servers. If any violations or provocative actions of the players are detected, this will always be reflected on the demos, and thus the offenders will be punished faster. Just select the server you are interested in below and find the record that will serve as proof. Save this file or send a link to it to the administrators to resolve your issue. Also, it is desirable to reflect the tick number on which the violation occurred. So we will quickly determine the degree of violation and the measure of punishment.
To view a demo, download it. Open the downloaded .zip archive and extract the .dem file to your game folder, left4dead2 directory. After that, launch the game. Open the game console and enter the command playdemo <name of the .dem file>. Recording can be controlled using the demoui command. Just type it into the console.