The Upgrades
During all this time, Henry had been busy trying to increase the strength of the territory in which he was in. Of course, he did not use any of his own resources. But instead, he decided to exploit the system completely.
It was a good thing that the system did not require each and every mutation crystal that he utilized in the system store to have been personally gotten by him. And due to that, he gained a great advantage.
This territory was one of the three territories that were found within Lockwood city. Lockwood city was bigger as compared to Crystal city. Due to that, the number of zombies that were within this city was extremely high.
With waves of zombies that continuously attacked the three territories within the city, the number of mutation crystals that had been accumulated by the three territories was incredibly high.