Scary. AWESOME!
Every time, when I hear a Plasma spider or Spider mastermind get alerted, I just jump up and say "HOLY S**T THAT SURPRISED THE S**T OUTTA ME! Oh come on! I'm getting so close to beating the game!" I always get surprised when I hear a Plasma spider or Mastermind, because, They scream so loud and so high pitched, it would probably make my ears bleed a little and make my forehead pop off. (figure of speech). Even when I hear their footsteps, it's still scary, because, I can't tell if they're getting closer or farther because, I don't think id software put real footsteps just so I can't tell if they are getting closer or not. They're still loud no matter what, whether they're getting closer or not. I don't get surprised that often on this game, but, people including me might get surprised, if a monster is like right at your face. Thanks for the sounds.
P.S. hornfluffy is right. The Spider Mastermind really does sound like he's saying "where are yah!" I rated helpful for hornfluffy.