Deliciously creepy. I liked the continuation of the ‘snapping’ theme, and the way the character escalates his actions as if it were a natural progression for him.
Although I really enjoyed this as a character piece, the only criticism I have is that you showed very little of the room, or what purpose it serves, which somewhat defeats the nature of the challenge.
I agree with enjoying the theme about “snapping”. It escalates with an even, but quick pace, starting with an almost gentle normality and then flying through the murderous roof. I love it.