I enjoyed the otherworldly feel of the game environment and the discovering ghostly apparitions. One element I would have loved to have seen is increased presence of the stalking being. To look back at the long stretching level and to see the spirit distantly somewhere back along the path. Building on that concept, it would have been great to add an appearance of the spirit in the final scene, after looking at your "hands." This would allude to the idea that the spirit caused your untimely death (the spirit is near the site of your body) and keeps you in the cave.