I've finished the RPG Combat Kata with @sanctuaryjs: https://github.com/codefreezefi/rpg-combat-kata-fp
Main focus was on learning some FP basics, and trying to keep the business rules about attack/heal close together: https://github.com/codefreezefi/rpg-combat-kata-fp/blob/saga/src/api.js#L84-L108 #codebreeze