Link:

https://drive.google.com/file/d/15NuRWmSGGDBUQFLB-YH9dyYS9-jRzojS/view?usp=sharing

Installation:
Once the file is downloaded, go to the following path and put the file in the "save" folder and that's it, just go into the game and do it!.

D:\User\Documents\RealRTCW 4.0\main\save

ATTENTION!:
Make a back-up of your original files, and then when you finish unlocking the achievement, put your original files back.

Once you have it installed, enter the game and select the file "M1_Realism" and start the game, just take a few steps to the door and you're done.