A comprehensive guide on gear upgrade priorities in Last War Survival. Explains why the Mythic Railgun should be your first upgrade target, how to efficiently use the Gear Factory, and how to manage Ceramic resources. Also covers hero pairings like Kimberly for maximum combat effectiveness. A comprehensive guide on gear upgrade priorities in Last War Survival. Explains why the Mythic Railgun should be your first upgrade target, how to efficiently use the Gear Factory, and how to manage Ceramic resources. Also covers hero pairings like Kimberly for maximum combat effectiveness.