I think the main cause of me not leaning far enough into the 'last level' idea was mostly down to time and resources. If I was not working by myself, or had more than 72 hours, then I would have had the time to add more enemies and rooms that play to that glitched concept. I even had the idea of adding a boss monster that got more glitched/broken the longer you lasted. But since I was by myself, I decided to limit the number of enemies so I could explore loads of different placements and combinations, and even then wasn't able to completely explore all that I had.
But thanks for playing! Glad you enjoyed it even if it wasn't what you were hoping for.