Replace this system.mrs with the other in the [Driver]\ijji\English\Gunz\system.mrs then equip the "the rust dagger\ or auto quester. Make a quest game.
You have to be playing with one other with the same System.mrs.
THen you have one-hit-kill on quest mode.
wow this shit is out dated and i make gunz hacks and mrs files are almost dead cuss to hard 4 people to make and i highly think this guy can make one and the last of the mrs have been detected 4 a while