It's simple, You get a really good headset, You choose the map (While you still have you vision), Knife the walls to hear the structural damage, Keep your ears sharp for enemies, Don't walk to much so you can hear THEM better, Spray and Pray.
When you say a good headset all I think of is " moms in the trash can ... she found the report card... she is coming back in side I repeat she's coming back inside... she grabbed the belt... she's coming up the stairs"
