They Came As A Meal!

A Loading bar burnt itself into the right arm of every human on Earth, At the same time, many different 'Monsters' appeared one after another. In an attempt to save themselves, people quickly evacuated to makeshift forts set up by various governments. A certain message appeared above the loading bar of every person.
'Prepare To Evolve'
To what extent are you willing to go in the name of survival. Will you die as a nameless sheep? Or would you Evolve!