I adore this one. Idea is super simple, but implementation is off the charts. Animations, sounds and atmosphere are fire, meditation speech is hilariously funny (10 stars comedy movie writing and acting right here). I like how it lacks menus or pause (you can't pause a nightmare!) and how final cutscene is just ascending... forever...
I found it a bit hard (closing gates always got me) and at first it's not super clear that you can move while calming down. I had to learn the map, and in the end I managed to escape by kiting the monster up and down in a straight line with no gates. Great job, excellent game!