What are the requirements for the Katagelasticism achievement?

achievements rogue-legacy

From the wiki page

After completing all the upgraded versions of the bosses, you will be able to get the "Traitor's Obol". After giving this Obol to Charon, any boss chamber that you have previously completed will lead you to a fight, where you play Johannes the Traitor with 700Hp and 300Mp, using his multiple-daggers and multiple-axes spell. You will fight against two copies of yourself with more HP and MP. Once you have won, you will earn the achievement "Syngenesophobia" and be able to play as the new class "Traitor".

Using the Traitor class to enter Johannes' room will then give you the achiement "Katagelasticism"


You have to unlock the new class,

the Traitor, obtainable by beating all of the new bosses

and use it to fight and kill Johannes.


Be the new class when fighting Johannes

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