Estou com a mesma dificuldade.
Translated From Portuguese
I’m having the same difficulty.
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I just made it to Grognak. I used level 5’s ranger fighter cleric and made. Good luck!!!
Try and keep your disarm moves for the fight, don’t blow them on the same turn.
Skip your turn if there’s two spaces between your party and the boss, let the boss waste its turn moving into your long range rather than moving someone into his and getting them pulled and smacked down