Giants killing squad

Era 2025: the world was at peace and humans were making advancement in technology . everything changed overnight when a meteor fell from space.
Everyone had gone to sleep ignorant if the fact that this would be the last time they slept this Peacefully Humanity had gone to sleep only to wake up to a new threat . Creatures all over the world had mutated and grown into Giants over 80 feet . It is up to our mc and his friends to find away to rescue humanity from extinction