Dig the game, game is intense, I cannot seem to get away to grab the purified essence from the shadows that I have vanquished. Pity the Essence doesn't land closer to the light on about 50% of the occasions of slaying them.
I'm not sure if the Waves ever end and begin again, I might not have got that far.
I've noticed the Sword swinging doesn't follow your head. which makes predicting where you're going to swing next tricky