I didn't go all out when I was fighting the two weapons at all. I occasionally attack them but I don't attack them with the usual firepower that I release in most enemies I battle against. That is because I keep holding back my attacks and did not take everything so seriously, only focused on dodging a little bit before attacking casually then starts dodging again.
It's not like I am treating this boss fight casually but I am conserving my energy to ensure that I won't get tired once I fight against the Tormentor himself who is still not attacking despite the spear breaking and him fuming in anger. It was like he has a code that he would only occasionally attack while either of the two are still up and alive on the field.
