Upgrading the Doomsday Shelter Starting from Search, Strike and Evacuation

Disaster struck, the virus wreaked havoc, and the world turned into purgatory overnight. All asymptomatic infected persons were transported to their respective [shelters] by the Lord God. Search for supplies, defeat infected people or other players, successfully evacuate, obtain main god coins, purchase upgraded equipment or attributes to enter more dangerous maps... Welcome to the Cataclysm [Search, Fight, and Remove] game.