UPDATE: 9 JULY 2019NOTE: For the purposes of unlocking THIS Challenge (aka limited time achievement), you only need to participate (win or loose) in 5 Escalation matches.IF you are going after the Esports Kait:
* Go to: Versus/Match Making/Competitive /Escalation.
Just play 5 matches of Escalation. Win or loose, you'll still make progress.
* Watch 60 minutes of ELEAGUE Invitational on live.gearsofwar.com from July 13-14.https://gearsofwar.com/en-us/esports/Gears_ELEAGUE
(Thanks first to DrMmmPie and Aura Battler for the clarification and reminder of the ELEAGUE Invitational on gearsofwar.com).