Can Humanity Really Survive The Tutorial?

Zach was at a family party when he discovered a very disturbing thing: He couldn't leave the building. Neither could he hear the outside world through the glass doors. Even when they were screaming for help as they were culled, Zach could do nothing... Against titanic beasts and deadly monsters, can humanity really survive the apocalypse? Especially when the tutorial is already such a death game? Read to find out.