Convergence Mod: Aled, Knight of Godwyn looking for some advice

Hey

So i came down to deeproot depths to find the Radiant Rune for my Nox Oracle caster. I have now run into this guy. Looking for some advice on how to get past him.

I am underlevelled. I don't have enough health or stamina. Can't get off any meaningful spells before he is on me so have found that using my long sword with sacred blade on it and using that to knock his health down. I can quite consistently get him down to around half health but I am a literal two shot so its not the easiest of fights for me. Also can't summon as its one of the "new" areas.

What else? Oh i have no lighting mitagation talismans, no boost holy talismans. I cant go and get anything new without redoing the whole run through which i am loathe to do.

Not the most ideal of scenarios. Other than "Git Gud" has anyone got any advise on what i could try?

Spells wise i have night comet and lava dart with some dots and such which are relevant. But they dont really help.

Thanks