I fought in the arena one after another in that order, on Legendary..
Nord Warrior.. level 5 ... 1 hand steel sword 1 hand steal shield .. 2 hand steel axe... 10 minor health potions... 3 frost bite potions... 5 wine... 2 venison..
and a whole lot of getting knocked the hell out...
87 gold reward and 2 level ups... Do you even keep playing after that?