Left 4 Dead 2 (L4D2) is a popular cooperative first-person shooter video game developed by Valve Corporation. The game features a vast array of community-created content, including custom campaigns, maps, and game modes. One such popular custom campaign is Cambalache 2, a challenging and engaging addition to the L4D2 experience. This report provides information on how to install Cambalache 2, focusing on the password-protected installation process.