deathmatch

Etymology

death + match

noun

1. (video games) A competitive mode found in first-person shooter games in which competitors attempt to assassinate one another.
   There are only eight levels but the varied game modes (including time attacks, survivals, team deathmatches, hunts, and sieges) in both single and multi-player keeps things interesting. 2013, Matt Fox, The Video Games Guide

verb

1. (video games, transitive) To compete against in a deathmatch.
   Doom video game (id Software, 1993): message shown when quitting If I were your boss, I'd deathmatch ya in a minute!
2. (video games, intransitive) To take part in deathmatch gaming.