Hi, it ends with exactly 4 missing because you're allowed 3 anomalies active (that's when the warning shows up) and then on the 4th anomaly, you get a game over. That's why there's always 4 missing.
You didn't list anything though?
Oh yeah, the warning is startling, it's- one of the few jumpscares in this horror game, sorry.
I could try and make it so that it changes according to the room you're in, that'll be in the next update. Good suggestion.