Charles' Moist Cr1TiKal' White Jr. discovered a way to reuse melee as fast as automatic weapons when he was playing Halo Infinite. This allowed him to end up with an almost unbeatable advantage. Even worse is that he found a way to do it incredibly easily with experimentation.
You can use this trick by reloading or switching weapons and then pressing the melee button. The melee doesn't need to finish its animation before switching weapons, so users can make the character switch weapons and then melee repeatedly for fast striking. When Moist Cr1TiKal told his friends, they became the overlords of Halo Infinite.
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Interestingly, Moist Cr1TiKal was abusing the game rather than playing it. For fun, he tried to exploit it or make it stop working in any way he could. He moved things around and ran into walls, and while doing this, he inadvertently figured out how to break the game.
Start at 2:25 for the point where they reveal how it's done. (Also, like for Charlie!)
The reason companies love when people use Betas to discover issues is because that's what that phase is really for, to fix the bugs. Halo Infinite's QA team may have missed this, so Moist Cr1TiKal did Halo Infinite a favor. The Moist man deserves a huge thank you, and we hope he continues to help out the gaming community single-handedly. (Can you tell I'm a huge fan?)