The goddess/lord of Mount Xiuh? You need to go through a questline to be able to fight her - starting in the Town Square (Town Crier option) of the first town.
I met the guy in the town square while eavesdropping, and at the end of the conversation he mentioned how the guy who knew what to do frequented the brothel... I have since tried every option in the brothel multiple times (including the girlfriend service) but the quest never continued, did I miss something?
But can you even defeat her?
I tried changing my strength to absurd amounts and gave me the right skills and I could kill her (we both didnt die, only her) but game just goes black after that.
Will it be intended to defeat her in the future? id much rather befriend her as the scenes around her are so absurd and hot that its crazy xD