What are my options if I joined Kymon but still want to farm their medal?
Go hostile with them next time around I guess.
Visit Benevald in Island near Blood Grove’s riftgate. He sells Kymon’s medals - so just re-visit him to renew shop items if the current ones are not good for you.
Coursing berween him and Homestead “special” vendor is actually much better way to farm medals, rather than killing cutists.