To install the mod, drag the files to the listed folders.
if any folder is missing in the path, create it.

\Documents\My Games\Might & Magic Heroes VII\MMH7Game\CookedPC\Data -> H7Config.upk
\Documents\My Games\Might & Magic Heroes VII\MMH7Game\CookedPC\Visuals\Heroes -> Visuals.upk
\Documents\My Games\Might & Magic Heroes VII\MMH7Game\CookedPC\Editor\Templates\Heroes -> H7Heroes.upk

added heroes: Agrael, Rashka, Khalida, Sandalphon
new heroes from Heroes VI: Xana, Lamia