Himmelstein Completionist achievement

I managed to get all challenges in The Last Yardbird mission in Sniper Assassin but it didn’t unlock the achievement for it on Xbox.
Did anyone have this issue? Is there a workaround to trigger this achievement? Or do I have to contact IO for help?

Hello Runner,

I don’t see any recent report around here about the achievement being bugged out and unobtainable, nor do I acknowledge a way to re-trigger it. So you might want to report the issue directly to the devs. Maybe the official support can give you further instructions on solving this one.

Click the top right button to submit a ticket: