It will clip if multiple sounds are triggered, are you adding a tag to the sounds triggered?
You could have a global variable for each, to be reduced/increased each additional sound.
So for example, each time someone is hit
Fist On Collision with Face :
|
_ PunchSounddBvar=PunchSounddBvar*0.5
_ Audio - PlaySound Punch Tag "Punch"
_ Audio - Set Volume "Punch" PunchSoundDbvar