Demondoom

From the back cover:

King Voltar’s violent death has shaken the realm, which has lost its one protector. Fire*Wolf, now a member of the Ruling Council, knows that ten years of peace have ended and that the hellish Demonspawn are at work again, plotting devilish destruction. Only the mighty Golden Orb, with its treacherous magical powers, can vanquish the old menace forever.

But Fire*Wolf’s terrifying quest takes him into the heart of the Spawn’s foul caverns - and into his greatest test of skill and strength. You alone can decide whether he will triumph - or meet a horrifying end...