Scariest monster encounter?

[raptorhunter6]

Well I gotta say now whenever I play a custom story I have this fear when I see the word Storage. Because well my scariest moment was in the Storage itself. The Grunt downstairs didn't see me despite a nearby candle basically giving me away. So my heart beat slows down when I see it turn around when all of a sudden that infernal music plays and I make an epic run for my life. Once I run up the stairs I see another Grunt just waiting there and I duck only to have it hit me, lowering my health to a very minimum. So now I have two Grunts behind me. Dear god, when I saw the loading screen door up the stairs, I was so relieved, when suddenly I get hit from behind and die, then I had to replay from the point where I come across the second Grunt. Never was I so scared in my life.