There is one additional bug I found, but which I forgot to mention early on. It only happened once, but the very first time I fought the Death Wall, I was pushed to the very corner. Then, instead of dying, Efrain was somehow standing in mid air and I could just walk off through the wall on the right side of the screen, moving on. Upon entering the Death Wall room again, it was as if it had been beaten, but with no MAX HP UP reward, naturally.