A specialist is needed to develop a mod for a game in C++

There is a game "Cossacks 3" (the game is not written in C++). I need you to write a code in C++ that will count the number of enemy units killed by the player in real time as an indicator. It is desirable that this indicator be located at the top left of the game, perhaps with an icon of a skull or something like that. The game has a “statistics” in which the number of dead and created different types of units of different players is written (maybe this will help you).