I've not come across a bug, but this game seems poorly designed. Combat is slow, there's no way to tell if you can win a fight or not (even if the enemy has more numbers) some enemies can stun lock you and that's a pain in a game where attacks deal more damage as the battle goes on and it's hard to tell if a status effect had worked or not until you make your next move. Even moving around the map feels painfully slow.
I like the idea of travelling through an Indian afterlife and, if someone's already creating a mod for this, I'm guessing that most people would rather do that than fail their way through multiple battles. Shame this game is already completed, my advice would have been to not have a battle system at all and go down a puzzle route instead.