I think that would be fine to do 4 glory kills to charge it, but fodders doesn't count. Since you would prefer to do Blood punch on that heavy but he is open to glory kill so you can't blood punch it. And also the tutorial of glory killing demons are still there.
8 comments
One tweak I would suggest is to disable ammo drops.
Otherwise, even with your tweaks, the hammer renders the chainsaw almost completely useless.