The Peasant's path to Vengeance

Einar was a farmer, a typical man, but after his wife got murdered, everything changed. Seeking justice for his wife's passing eventually led to his death and sent him back in time. However, Einar now seeks revenge rather than justice. But in a world ruled by social status and magic. How far can he go in his quest for vengeance? He is a peasant and a person without magic. Is he truly capable of challenging his adversaries?