Woah, nice work. I've considered doing a count myself but an image of Guts sword covered with insect apostle spawn flashing in my head has always stopped my plan.
Maybe I'll start a count for Serpico. If there is 30 more volumes and he kills the peons while Guts deals with 1 or 2 huge prey he could probably catch up... well probably not actually, since guts also hacks peons before, after, and in the middle of all his fights, but Serpico will probably make a decent count too. I think he is already number 2, or is that Schierke and her blaze wheel, etc? She might actually pass Guts.