I've been playing NS2 alot lately and now that i know whats going on it is becoming apparant that alot of alien deaths could be avoided if people stop clunking aroung all over the place. All you have to do is press Lshift as skulk and Lctrl as everything else(except lerk) and you make no noise.(onos still makes noise but is quieter)
Even as someone who is still pretty much rookie i can almost pinpoint where enemies are when i hear the footsteps through my headset.
The main reason im posting this is for when i play as a skulk. I'll start to sneak up on marines with my skulky friends, but instead of sneaking with me, they will clunk forward a few steps, wait for me to catch up, clunk forward a few steps, repeat, revealing to any nearby marines where we are and ruining the element of surprise, which as a group of skulks, lowers our chance of success from like, 90% to about 30%.
Think about it, did Solid Snake forget to sneak when he won the vietnam war for the americans? No. He was sneaky as f**k and slaughtered his enemies.