When voice lines from the intercom are happening it makes the backstab noise way harder to hear. The backstab noise does not occur at all when using the auspex. sometimes the backstab noise doesn’t occur at all. The poxburster ticks rapidly when its on a floor above you even though its much farther on its path than the noise makes it seem like. Also the poxburster can spawn right next to you in a fight and will tick slowly which can cost you the game. The trapper doesn’t have a distinct enough sound and is rarely noticeable until its right next to you or about to fire.