You can fight through this as a legitimate approach.

There are a good few interesting things you can do to help.

Personally I
Called upon the assistance of some Ogre's I had previously hired, and also unleashed the nearby spiders


But there are several different ways to do this with help from the world or even straight up fighting normally if you have a good team setup.

if you're struggling with the fight then you can come back when more prepared, either by leveling or getting more resources to use,etc.