Monsters in the game (A bit spoilerish?)

[Peanuckle]

Spoiler tagged because it might dramatically change the way you approach the game!

Spoiler below!

In my experience, the monsters seem to appear, walk around for a moment then disappear as though they were never there. It's a great way of keeping the player on edge without punishing them for having run out of oil or tinder. Until, of course, they realize that the monsters are gone and that they can run willy-nilly.