Dagger and Parry vs Godskin Duo (Level 51, no weapon upgrades)

Godskin duo took me a few hours, but I actually expected to take much longer. This gives me some confidence for my future RL1 no upgrades run.
As always, the reason why I'm not using sleep pots (or sleep arrows) is that it's a finite and rare resource. I tested the Sword of St Trina, but I couldn't make it work.
Hope you enjoy the fight :)
(though I'm fully aware almost nobody likes the Godskin duo xD)
This is part of a playthrough in which I don't upgrade any weapons and I only level vigor.