Dont worry

In the year 1876 a large rip in time broke through the universe it was tiny at first, only the size of a thumb nail. Its glamour covered its gateway from human eyes, but over times it begun to pulsate with power and grew slowly over time until it was around the size of a large door. It still could not be seen by humans, but angels in our universe started to panic and worry for the humans safety. However God did not want to hear anything of this, so one by one angel???s started to fall. By the time 15 angels had fallen, God decided to lock the angels away in heaven, banning them from our world. Yet by the time the angels had fallen it was already too late. The skies where dark with death, the city???s wreaked with burning and splattered with red blood. They knew what had happened, Demons had entered this dimension. It was then that they decided to become the Hunters for earth and the saviours of the humans. It was then that God noticed what had happened. He hated to admit his failure to the other angels, so he kept them banned, but he gave each of the 15 angels 2 gifts to help them along the way.
Setting:
It is going to be based in a basic town with a shopping mall, cemetery, hotels ect. However everything has been smashed and at least been scorched with fire. Underground tunnels hide some of the few humans which still live demonds do not know about these.