Finally!
A game with horror elements! I can see the similarities with the game "FAITH".
I would say that it would have been EVEN cooler if the audio was also 8-bit; it definitely would have improved the atmosphere.
One small feedback: make the timer a bit shorter; 5min is a bit too long.
Sadly, I would have to agree with the others: the blanket usage isn't there.
But i can see a priest "tidying up" a haunted mansion or house :D