Hello thank you for playing my game and providing feedback.
Regarding the first issue, I'm not sure I understand. Do the enemies have fire particles emitting from them but take no damage? If that's the case it is definitely a bug and one I was not previously aware of. I'd love to hear more details on it if you could expand on that.
The other bugs you mentioned are either known of and I'm working on fixing or have been resolved but as I imagine you might be aware I cannot update the game so unfortunately they'll be here to stay for the duration of the voting period. Nevertheless, thank you for reporting on them. I hope they didn't impact your experience too harshly.