Just ElDorito hack/mod. The game is provided in another torrent via another uploader.

=====================================================================================
ElDorito is a dll-hook application to aid in researching the russian Halo Online game, it enables features such as loading levels, disabling HUD, and much more. Simply extract the files from the archive into your Halo Online directory (make sure to backup your files first), run the eldorado.exe and a console window should start up parallel to the game where you may input commands. Input the help command to get started.

Created by DEElekgolo, Limited and emoose. 

A Nifty guide to Halo Online: https://docs.google.com/document/d/1CAyXfd4d3lhwBXEoiit05L-I1Sirz0R2C-dV2RTvzE4/