Person wants (to) Recover. Recover is a synonym of Heal. Heal is related to Fixed. 
Fighter is a synonym of Champion. Champion is a type of Person. Person does not want (to) Difficulty. Difficulty is the opposite of Ease. 
Person --Desires--> Recover <--Synonym--> Heal <--RelatedTo--> Fixed 
Fighter <--Synonym--> Champion --IsA--> Person --NotDesires--> Difficulty <--Antonym--> Ease 