Kalosx

Kalosx on ZFRR

Kalosx is a Call of Duty Zombies First Room runner from Canada, ranked on Zombie First Room Rankings with a ZFRR rating of 34 out of 100 (rookie), which places them 936th of 9,478 ranked players. 3 First Room records to their name, with a best round of 38 across Black Ops III.

Their First Rooms on ZFRR: Moon, Nuketown and Revelations. Their standout runs are round 28 on Revelations in Solo and round 27 on Moon in Solo. They compete in the “High Rounds” First Room ranking (108 of 962).

Kalosx also plays cooperative First Room: 1 team run at Solo, alongside . Team runs are listed for the record but score no ranking points, as no difficulty coefficient exists beyond two players.

First Room is the purest discipline in COD Zombies: no Pack-a-Punch, no easter egg, no train around the map. You hold the starting room, you keep the doors closed, and you push the round counter as far as the zombies allow. Every high round, world record and personal best on this page is backed by its video and checked against Black Ops III. Follow Kalosx on the ZFRR leaderboards to see their next run.