User blog comment:Linathan/Squad Spotlight & Guide: Trial EX8 - Genius' Challenge/@comment-1389361-20160727221045/@comment-29300014-20160730211114

When Kalon hits 50%, he does Grand Life Conversion. Think about the wording. "Conversion". How you beat it without stealth is to have most of your units die before he hits 50%. Then, you hit the threshold, and watch dead units revive and alive units get killed. Then you just kill his arse.