My doomsday survival system

A remnant shadow of the calm sky crossed, and the meteorite hit the ground. When people were unprepared, the virus spread. Countless creatures have mutated into monsters, from humans, all kinds of animals to plants the appearance of monsters is that humans suffer heavy losses, most weapons and equipment are destroyed, and there are few remaining weapons, which can not resist the attack of monsters in desperation, people set up a safe area. As time goes by, monsters seem to have completed their evolution, and humans also have powers the battle between humans and monsters seems to have just begun.