Ok, I need another hint :)
*spoilers*
I sneak up behind the baddie, but my sword doesn't work. I swap to the patch where the sword works and...I'm roasted. Am I missing something?
Viewing post in Do NOT pre-order games jam comments
*spoilers below*
Hmmm, sword should've been working in the invisible mode too, I just ensured: https://imgur.com/a/UQOfukW. Was you able to swing with it but it didn't kill the boss or you couldn't swing at all?