Brought Fist O Cthulhu's guide over from the One solutions.
This isn't really a guide but a tip that makes boosting this achievement a little quicker. While boosting this achievement, we discovered a way to cut down each match to just 1 round instead of a minimum 3.
When boosting this achievement, there are 2 squads of 5 people who will search for a match at the same time. Each match, one of the squads will kill themselves, ending the round quickly. This normally has to be done 3 times to actually complete a match. At the end of each match, everyone will have to quit and squad up again.
When the necessary amount of players have readied up, the round will begin. Everyone will spawn and a 5 second counter will appear before people can run around. We discovered that if everyone on one team kills themselves (redeploys) before the 5 second timer runs up, the match will end on that round, giving everyone credit for that match.
Special thanks to xDaddy Cake, wenerdog, n00b1ets, MC IRV, MAGIC DANY91, Gbenga Ologun, Draco719, Darksora250, and Bomb 2 chest for discovering and testing out this tip.