If you've taken a look at BYOC's options menu before, you would know that there's options to change the sounds of when you hit an enemy and ones for killing an enemy. I believe I remember that the hit sound is apparently defaulted to Quake (specifically the one that people hates I think...), but that may not actually be the case. There's a kill sound I didn't show in the video, and it's the one where you could make it completely the same as the hit sound you are currently using. This means you can disable kill sounds entirely if you have your hit sound set to "None".

Here is my personal preference on what hit n' kill sounds I usually use:
Singleplayer: Hit sound - Pizza Tower; Kill sound - G.W Bell Pop
Multiplayer: Hit sound - Team Fortress 2; Kill sound - Sonic Unleashed
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