Wow, I love the atmosphere and the inscription vibe of the game! Really well done. Feels very polished and the fights feel balanced and engaging! Love the deckbuilding mechanic. Also nice shading of the environment.
What felt annoying to me, was the noise of the narrator, although the sound has an interesting character, like the narrator was some sort of broken or old machine. I kind of got used to it after the first boss, but it was making it a little hard to get into the game, although the visuals are really immersive.
I also got a bug after I finished the first boss, where I wasn't able to move any cards, in the deck builder as well as in a fight. I was still able to skip my turn, but was unable to play cards. Was this the bug you mentioned?
All in all really nice game and impressive work!