That is strange. I don't really remember this challenge. But let me think outloud;
Does 'on your first turn' mean on any of your team member's first turn, or does it mean the champ that goes very first must perform the kill?
I.e. first champ goes and applies buff/debuff, second champ goes and kills; does that count or not?
Next time you have a one champ low level opponent, try fighting with only your nuker. Or at least have the nuker go first (counterintuitive I know).
Doesn't the first turn mean the first time ANY champ goes? I thought that was what I had to do when doing this mission, at least?
Like your first champ to go has to kill the enemy champ, so if you speed boost or Inc Atk or something instead, it doesn't count.
I think this might be correct, but I can't remember back that far lol. I would also expect more threads from this stupid challenge than the artifact ones that are always "bugged" 😆
I do several times, but still no count.
I do not remember this being a problem at all. But perhaps you've got some bug or something.
As you know, all Plarium employees are sheltering in place or evacuating right now, so opening a support ticket might not be the best way to figure this out. Let me ask around for you instead and I'll get back to you.