Hammer the Exalter

Caught in the middle of an ancient battle between good and evil, Darion Descartes and Isaac Evans are transported to the Island of Salnikov through the magical powers of the mysterious Wodan, a wizard who for millions of years has created worm holes through his paintings, to escape the monster Muntare.
Separated during their journey, Darion arrives inside the ancient mountain fortress of Mesania once occupied by the Aeserians, a race of giants who were ousted a thousand years earlier by the invading Omarins. Darion becomes embroiled in an Omarin civil war where he is made the leader of a rebellion from the Lower Ships of subservient labourers, against the repressive Upper Ships ruled by the Seeress Mara and her prelates. The rebels believe Darion to be the fabled Rok of Salvation as foretold in the Jharnell, an ancient book of prophecies.
Through his new rebel friends, Darion meets the beautiful Le Carra, the hidden half queen whose existence had been kept secret from the higher orders until the day when the rebels are victorious.
Meanwhile, Isaac has arrived on the other side of the island and travels to the city of Salnikovia where he meets the remnants of the Aeserians who, led by Hammer the Exalter, are on a quest to assault Mesania and return the mountain to their people. Two recalcitrant giants, Arad the Generous and Minar the Loyal rally against Hammer's plans and are exiled from the city. Joined by Isaac, they seek out the mythical leader of their race, Kolin the Lawgiver, the only one of their kind who can avert a bloody and fruitless war.
As the clouds of battle gather the true enemy reveals himself and the races of Salnikov must rally in a last stand for freedom and the future of the universe.