Extract the patch into the same folder, overwriting any existing files.
Go to Options > Game and check the Debug HUD box. Extract the patch into the same folder, overwriting
Get the main files and the latest patch (e.g., 1.4.22) from ModDB . Extract the patch into the same folder, overwriting
Use 7-Zip to extract the .7z file into a new directory. Extract the patch into the same folder, overwriting
Call of Chernobyl is a , meaning it should be installed in its own folder, not over your existing Call of Pripyat installation.