World Saver System WSS

Gerald Acers is given powers and abilities by the World Saver System. Time on his world freezes when he is sent to other worlds to eradicate invaders. When his mission is completed he is given rewards based on how well he completed his jobs. The rewards allow him to take certain items or abilities home with him.
In his everyday life, Gerald tries to stay out of trouble but it seems to have a way to find him. While his family has military and government association, Gerald is an author by trade. While the world sees him as a popular fiction writer, he himself knows that he writes nonfiction. He turns his adventures in other worlds into stories that he sells for profit.