Found this link at epic forum.
Description:
This mutator allows you to specify the final damage output of monsters. It works with melee and projectiles and afaik it works with monstermanager and satore too!! Full instructions on how to get this to work with monster manager and how to use the .ini file are included in the ReadMe. Please Read It!
http://agutgopostal.com/iniland/Downloa ... Config.rar