I didn’t get to log in until today so I killed Ashava on the last spawn with a level 17 - I dinged 20 afterward.
I don’t see the trophy on the mounts trophy tab or see a beta Ashava achievement, just the standard “World Boss Challenger” achievement.
Will I not get the trophy because I wasn’t lvl 20 during the last kill?
The official requirement was that you needed to be level 20 when you engaged (and subsequently defeated) Ashava. Doing it at 17 does not satisfy that criteria.
Guess I’ll just put in a support ticket because that is ridiculous 
Hit Y, Challenges, and Feats of Strength. As long as you see the following three things marked done, you’ll get the rewards come final release, whether or not they appeared in your dresser and stable now.
Would you actually see the trophy on the stable person? I have the ‘killed at level 20’ achieve but doesn’t see the trophy, wondering if that’s normal.
Guess that answers that then, pay no mind. 
All you get is the feat of strength right now. You get the trophy at launch.
Edit: Changed fest to feat
Answers are here 
Ashava reward is “Early Victory”
Yes. This. They are tied to your account. You can deleted all your characters. Make a new one, and still have the achievement.
Yes, they do not appear in the current beta. All you need is the feat of strenght achievements.
So I had the same issue and started a topic here, with exactly the same question.
Was lvl 18 when I first killed ashava.
I was suspicious about the trophy and the achievment so I asked for clarification. Most said, that u HAVE TO BE lvl 20 WHILE KILLING Ashava. Not before.
So I killed her again (with lvl 20) and got the achievment “Early victory”, which definitely marks the kill and the requirement to get the trophy.
So sadly. Your kill does not count, neither will a support ticket change anything about that. Sorry mate.
You were level 17 and needed to be level 20.
Was communicated weeks ago.
Thats why it made no sense for level 15s to stand around and make it harder for the lvl 20s (griefing).
If you didn’t kill him after you got to level 20 you didnt get the trophy.
So you killed him at 17 (didn’t count cause under 20) and then you got to 20 and didn’t kill him again? Uff… why?
I don’t have the “Early Victory” achievement then, because I did it at level 17 I guess. That level requirement even if you down it seems wrong.
I have the World Boss achievement so it’s pretty easy to see all those who did it below level 20 and retroactively fix it.
Thats what you get for griefing and getting carried by legit 20s.
That’s your own fault sadly. They have said repeatedly lvl 20 for the reward and that lower levels should stay out of the zone so the level 20s can get other level 20s to group with
I realize responding to the most toxic person here isn’t smart but I just want to point out I didn’t get to play until this morning and I power leveled to as high as I could up until 10 minutes before the spawn. I didn’t “grief” or get carried, I spammed all the OP spells I had and did all the mechanics while watching other 20’s stand there or die in poisons and swipes.
I am sorry, but if you did not meet the requirements for the Achievement then Blizzard can’t grant it to you.
There is nothing to fix. You needed to be level 20 for the Achievement. If you were not, then you did not earn it. They won’t change the requirements.
This here. Check your Feats of Strength to see the achievements you have earned. If you completed it, then that is where you would see it.
The actual in-game rewards are granted in the Release version.
What’s ridiculous? The fact that you didn’t read the requirements to get the trophy? It clearly says you must be level 20 AND kill the world boss. They didn’t want people level sub 20 going in there ruining it for others. Unfortunately like you, too many others didn’t read either
Yeah, well it was worth a shot for me to at least ask anyway. Appreciate the response, would be nice if the feedback made it past the forums and was considered.
To the toxic replies, I hope you all have a real wonderful day. Sincerely.
They do read the forums, but chances of them changing the requirements is next to zero.
There will be other cosmetic mount trophy rewards you can earn in the game over the next many years. Maybe one of those will be something you like even more.
i dont know why ppl tried under 20 at all. on top of being a nuisance it was obviously not gonna count.
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How to earn the Cry of Ashava mount trophy:
Simply defeat the world boss Ashava with one level 20 character
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