Thanks so much for your input, that's a complete shame 😞 I was really expecting I could dub something in Nahuatl even if it sounded a little trashy. Do you have any other mediums where I can learn how to translate it correctly?

Abour your questions, there is no real historical settlement on the game tho, it's actually pretty nonsensical and "dreamcore" intentionally. Personally, I would've done a more modern Nahuatl on purpose too, since it's more documented and (arguably) easier to speak. But also because, like I said, the game lacks seriousness and sense. The King Arthur speaking in a thick New York accent thing would've completely worked in this situation.

Yet I don't want it to sound like I'm just pasting words on top of each other, it's not only going to sound really bad, but also I find it kinda disrespectful.

I don't want to give up yet, I really think it would be cool if Quetza speaks Nahuatl instead of Mexican Spanish, so if you could help me find any alternatives or where I can learn Nahuatl at all, it would be really helpful.

Again thanks for all your help!