This an Xbox 360 exclusive mission that has been remade on PC by the legendary duo QuA and WuA.
This mission has been created as a remake of Duel Challenges from Techland for Xbox.
You might notice only slight differences from the original Duel Challenges - of course there is no selection from the map, this would require major changes in the source code.
This mission works on DX10.
////////// HOW TO PLAY //////////
Put the "xduels" map folder to: .../Call of Juarez/Data/mapscustom
Put the "MapsDuel" folder to: .../Call of Juarez/Data (the same folder where your mapscustom folder is located)
Launch the game -> select Load -> Custom Missions -> start the Duel Challenge mission (if you can't see it in the list, one of the folders is not placed correctly)
(NOTE: I recommend having "mapscustom" folder in the main game folder, not in that one in documents folder - for Steam version, the path can be like "C:\Program Files (x86)\Steam\steamapps\common\Call of Juarez\Data".)
Have fun
WuA