Since this might as well be the new thread, this fucking guy. I thought he was really fucking unreasonable and cancer but turns out you just need to hold back, wait for him to do his leaping smash, then use skyborn might to do a rapid charge heavy for a free backstab attack, then wail on him while he's down and rinse and repeat. Also keep throwing fire pots on his face since it deals a lot of damage and it only costs 120 mercury.