According to sound design supervisor Paul Lackey, the "hit-pip" sound played when you successfully shoot another player was created using the sound of a beer can opening.

According to Lackey:

"Another extremely challenging sounds was the 'hit-pip.' When you hit someone, you need to know you made contact. The sounds needs to cut through the mix but not feel like it comes from any hero. It went through tons of iteration. Finally, one night I thought, 'It should be satisfying to hit an enemy.' Just think about what's satisfying: beer. So I literally opened a beer can. Pssht. The sound is reversed and tweaked a little, but that sound is our hit-pip."