Board Game Arena

Checking https://boardgamearena.com/bug?id=143357 it seems, the rules on the publisher website http://nerduragames.com/pentaquest, also linked on the BGA game page, are not the latest ones. Where can I find the latest rulebook?

I have them in the Pentaquest Heroes expansion. There are three cards describing the rules for "Pentaquest, revised". They are the same as the ones described on the publisher website for the game, with the exception that the score is the combined total of your army and discard cards (as it is implemented here).