Here is a quick tutorial how to download and load the map.
Drag & drop the “Hitman 1 Colorado Map.xml” file into your GTA V folder.
Start Map Editor.
Click on “Load Map” and select “FileChooser”.
Now, search the xml file and click it.
You need Map Editor, ScriptHook V and ScriptHook DoNet to load this file.
Credits:
Yeah Im Fabian