The devil works in an open space

Scenario No one know what awaits you at the end of life. One day, a man was brave enough to face the devil ... He fell into the abyss, down towards the deepest lands of unknown hell. He was ready to do anything to come back to life and prove the world he was not just another loser. The devil was a player, he offered him a contract to save his life, but the counterpart was huge. The man would be continuously losing his life energy, and had to kill creatures or transform objects into energy. The man accepted this strange pact, and then the devil started to laugh diabolically ! “Hahaha, run you f...