The voices are pretty cool, perhaps some demons talking sh** to you, or moaning of the suffering and the dammed as well, like as if you are in a haunted place, we have the kids talking, the lost souls screaming and moaning and wailing, then bad ass demons growling and threatening and generally being bad ass.
Also the demons may impersonate the kids voices, so the kids voices may give advice, but say the advice was wrong, we hear the demon doing the kids voice then change into a demon voice, so we don't always know if kids voices are good or bad, if the advice is always correct.
Also the demons will threaten the kids. So we ocasionaly hear the kids say, please don't hurt me, I'm frightened, please help me, No stop , don't, don't hurt me please, like what the hell is going on, is it the ghosts of kids being hurt by something from when they was alive, or is it the demons threatening them, making them give bad advice to the player, or is the demon pretending to be children, we can mix and match the sounds by what we play, and the order of the clips
kids- please don't hurt me
kids- I don't want to.
kids- Please don't make me.
Demon- Evil Laugh
Demon- I can make the hurting stop.
Demon- Give yourself to me.
Demon- No one can save you now.
Demon- Evil Laugh
Kids- Help us repeating and fading out to silence.
You get the picture, lots of voices we can alter when and what is played to make our own pieces and stories, would be very effective, just plain mental really, it could be put into a game and be very unnerving.