This was a nice one! My only minor complaint jam-wise is the transparency in the attacking and death animations doesn't quite fit the jam conditions of 1 bit.
I loved how you pit the "rpg kill everyone/explore to get exp" against the need to rush the game due to the poison timer. It was a great way to create a lot of tension and decision making with very little to work with. I was sad it was over so soon because I wanted more, which is great! Nice job! :)