From the Ashes

It had been a thousand years since an asteroid slammed into the Earth, wiping out three quarters of the population and mingling the Underworld with the Living.
And now, a fierce war between Undead and Living broke out. A peace treaty, kept for nine generations, had expired, and the eight major Undead and Living camps were waging war.
History was repeating. Again.
In a desperate attempt to quash the wars, it was decided a deadly tournament would be held to decide on a missionary to send to the camps, to persuade them to sign another treaty and ensure peace. On their return, the missionary would be rewarded with gold and prestige.
There's just one catch- sixteen Undead and Living, would enter the Colosseum, where countless lives were spent. And only one would walk out.
Yes, history is repeating again.
"Ready to die?" she asked.
"Not quite yet," I said.
Can peace found from the ashes?