It's so surreal hearing those Microwave sounds. That's actually just a free sound effect someone else uploaded to RU-vid. I'm intimately familiar with the sound because, as a meme, I made a whole song using samples from that sound effect. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JG4wUW-82tE.html (I wonder if I can post a link or if this comment will be nuked?)
As a former soldier, I can confirm this is what combat is like. You see, the trick is to shimmy through doors where the enemy is, they never see it coming.