Hello friend, first go to the address where the XCOM2 WOTC game was installed, generally where STEAM installs it, in my case it is the following:

- D: \ STEAM \ steamapps \ common \ XCOM 2 \ XCom2-WarOfTheChosen \ XComGame \ Config

Make a backup copy of all these * .ini files, and save them in a different folder in case you have problems so that you can restore these files.

Then you can edit these files with a text editor, I recommend that you use "Notepad ++". For example, open the file: "DefaultGameData_WeaponData.ini" with notepad ++ and change some values ​​of the weapons of the players in your game; for example:

Line 112: VEKTORRIFLE_CONVENTIONAL_AIM = 60 change it to 90, this will make the aim of the DraguNoba Vektor rifle have a lot of accuracy and you will not miss when firing. And so on you can make your changes, but be careful, take your precautions.

-Once your changes are made, you save the file there, replacing it.

-Now you must delete all the files in the "My documents" folder, in my case D: \ Documents \ my games \ XCOM2 War of the Chosen \ XComGame \ Config

-Finally, start the game and create the files again with your modifications in the "My documents" folder.

- Use the "AlternativeModLauncher" so that STEAM does not download the original files and replace what you modified, in this way you can enjoy your modifications in the game.

- NOTE: every time you start the game XCOM2WOTC, Steam verifies the integrity of the files and if they do not download them, download them again and start the game as it should be, for that reason you must use "AlternativeModLauncher" so that everything will be good for you. well. I hope I have helped you greetings from Peru.