Destroyer of worlds

the long version

"In the far lands, the brothers and sisters of dragons gather for the final battle, the one the ancient Norse legends called ragnarok, which will lead to the passing of gods and men from the universe. The champion of life, Jack Churchill, has gathered a mighty army, backed by the gods from the world's greatest mythologies - Celtic, Greek, Chinese, and more. But will even that be enough?" "For at the massive fortress of the enemy, the dark force that has opposed the brothers and sisters of dragons across the centuries is about to manifest. Its warriors number in the millions, and they are already on the march." "The only hope is a two-pronged assault: while Jack leads a small group of allies on a raid on the enemy fortress, others must venture into the land of the dead to reclaim the mysterious extinction shears, which may be the key to victory." "Yet the seeds of defeat have already been planted amongst the heroes themselves. Driven to the brink by betrayal, sacrifice and death, his allies fear Jack may instead bring about the very devastation he is trying to prevent."