Alien Star Berserker

A special forces soldier accepts a generous reward to travel to a distant alien world and check in, but when the starship's landing goes wrong, he is stranded there for eight years on a planet still in the Stone Age. Over those eight years, he starts from nothing, overcomes one challenge after another, and creates miracle after miracle. He reclaims thousands of miles of wilderness, opens trade routes across vast distances, and brings prosperity to the people and strength to the nation. Leading tens of thousands of troops, he campaigns across the land, punishes evil, fights barbarian forces, spreads civilization, and rescues the people from the depths of misery...