

You can safely use it to refill your mana and health, then move back and forth between it and the Leechmonger. The enclave is a slightly raised spot of land to your left. Move toward the fog, passing under some wooden supports.

Alternate: You can find an easy hideout at ground level where the archstone for the next level would normally be.While out of the way of its attack, by all means use the opportunity to heal yourself if you need to. You shouldn't need to use many healing items if you focus on attacking it quickly. Then roll away as it tries to attack you. Then simply go down a level or two until it begins attacking you, walk right up to it and whack him hard several times. Standing on the uppermost level will make you safe, so use the opportunity to cast Protection, and if you have a Regenerator's Ring equip that. Make sure you have some Turpentine or Sticky White Stuff to apply to your weapon, or alternatively use a Dragon weapon ( Dragon Long Sword +3 for instance will make short work of him).
