Yeah, I feel like there is a lot to keep track of, and the sound cues only tell you something is there, not where. I think this mode may benefit from some kind of indicator to help narrow down where problems are, or maybe just a mode with no failure where you can mess around and figure out what rooms things spawn in. But 15 rooms is a lot to search through when you are crunched for time.
I do like the mode though, I haven't tried since this update but I made it to night 5 before getting completely stuck, I tried MANY times.