Well, after thirty-three years of silence I'm here to tell you it ain't so. There's a clever way to win, and it's not listed as any of the options in those fight paragraphs. Look away now if you haven't played the adventure yet and want to test your mettle.
So here's the thing. Before your final showdown with Damontir the Mad, he summons a doppelganger to fight you:
‘Damontir,’ you say flatly. ‘You will die by my sword.’
He looks at you sharply, then laughs without mirth. ‘Dragon Knight of Palados! Were we to cross blades, perhaps you might be the victor. But I have a dozen sorcerous ways to kill you before you reach me.’ He draws something from his tunic. Light flashes across your face as he turns it towards you. ‘The Mirror of the Moon.’
Damontir carefully angles the mirror to reflect your own gaze back at you and then releases it. Instead of falling to shatter on the hard stone floor, it floats in mid-air. It starts slowly to rotate, growing larger as it does so until it seems a swirling pool of quicksilver filled by your image. Then, as you stare in stunned incredulity, your own reflection steps out of the mirror and stands before you. Illuminated by the unearthly half-light of its mirror world, it does not quite seem to be your twin. Rather, it looks like a vivid portrait of yourself rendered in unnatural hues.
‘This is your simulacrum,’ explains Damontir. ‘A soulless duplicate of yourself.’ The simulacrum utters an unreal cry and advances on you with a look of wild malice. ‘It is an unreasoning automaton, quite dedicated to its single purpose. Killing you.’
Contemptuously, he turns away from the fight and resumes his translation of the runes on the podium. The simulacrum has the same VIGOUR as you have at the moment. It is like you in every respect, except that it has neither soul nor intellect, and does not cast a shadow. You prepare yourself for battle.So reviewers sometimes grumble that means a fight at fifty-fifty odds followed by having to take on Damontir himself. Did you spot the exploit? Earlier in the adventure you should have picked up a Ring of Healing, which you can use at any time to restore your VIGOUR to full. The simulacrum has the exact same stats as you have at the moment that Damontir creates it. So just hold off using that ring. Make sure you have only a few VIGOUR points left when you catch up with your foe, that way the simulacrum will be created with the same VIGOUR. You can use the ring (the clue is in that line "prepare yourself for battle") to make that a very unequal fight, then you're ready to tackle Damontir almost at full strength.
Turn to 43.