The whole concept works really well in practice. Realizing you can lock on an object in place with the flashlight while sneaking in to the dark space where the other would've been is such a cool puzzle moment. The atmosphere sells it too. The audio is well adjusted, the ambient tension, the enemy cues, even the little sound when the flashlight hits one of those shaky objects is nice.
It's one of those mechs where you immediately see the potential. Really good idea, and it fits the strange vibe perfectly.