Double Kill is one of Halo's classic multiplayer medals, awarded for two kills in quick succession and announced by the game's distinctive multiplayer voice. The call became shorthand for a strong run in Halo matches, repeated across sequels and countless gameplay videos, streams and montages. Because the phrase is short, instantly recognisable and tied to a satisfying moment, creators still use it to punctuate shooter clips even outside Halo, where listeners immediately understand that something impressive just happened twice in a row.