Scary as hell. Impressive entry.
The sound design alone makes my heart race like crazy, and Mr. Angry Man has a really good design. The use of lights and shadows creates some genuinely scary moments.
Overall, impressive.
I do wish Mr. Angry Man didn’t appear near the beginning in a corridor with only one door, because I have to either juke him or take a hit just to advance.
Also, on my second or third run, I was about to get the blue key and find the last valve, but I clipped into the corner where the blue key is and got stuck.