Excellent overall atmosphere - the background audio was great, the lighting was top-notch, being able to see the light of approaching ghosts worked very effectively to create tension. The controls are approachable, although I felt the digging was a little imprecise and it was hard to gauge which part of the ground I was digging. Digging also felt a little slow for me, given it's the main action the player would be taking, I felt it could do with feeling a bit more responsive to my clicking.
Overall, a decent game with a very distinctive feel! Nice job!