Valve added a competitive mode to Deadlock back in October. This drastically improved matchmaking by sorting everyone into 11 ranks, which were more in keeping with players' skill level, but now there's another way to raise your blood pressure...
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Valve is adding an 'extra competitive' option to Deadlock that'll make matches harder, but only because everyone in this mode refuses to speak
Source: PC Gamer (opens in a new tab)