Nice game and concept, however the controls feel a bit too sluggish, especially when you carry the amulet around with you, since it seems that you move slower with it than without it. The game also becomes much more easier the more times you play it since you memorize the placements of the guards, which makes the element of surprise redundant the longer you play. The game is also very hard so far, it took me 6 or 5 times until I got most of the keys.
The ghost also manages to glitch out many times. I have encountered many times that the ghost tries to fall out of the world but then it come back, and it continues to jitter until it's fixed.