He's talking about the zombie showing up only when/if you turn on your flashlight.
That would be kind of pointless and stupid then wouldnt it? You could avoid fighting a majority of the enemies hidden in the dark corner just by not turning on your flashlight.
Having magical doors in the wall open and something coming out of it only goes so far.
This has happened 2 or 3 times as well.
Two or three times, 2 or 3 times. It's the way half the monster spawn for the first half of the game, it's litteraly 2 or 3 hundred times.
Uhhm no. He said "something coming out and only goes so far"...meaning whatever it was didn't get through the door at you and retreated. There has only been a few instances of this. Can't refer to specific events since I don't like leaving spoilers, especially in a game that relies on the element of surprise.