Opposing Force Hardcore makes my Half-Life Hardcore mod apply to Opposing Force. In Order for this to work you will still need my Half-Life Hardcore file, and will need to know how to apply it. (instructions are in the file, open it with notepad.)
skill file for the mod. put this in your gearbox folder and follow directions in the file and it should work.
✌✌✌✌ Hard Core !! THIS IS THE REAL H ARD CORE .\m/