Posted on 02 June 22 at 15:34
I had the same issue with Lake Ober. Got 100% but no achievement. Replayed the entire “The Rift” area thinking maybe it would pop- again, collected all the items- still nothing. Then I found this thread, restarted my console, opened the game, and Voila, the “Lake Master” achievement popped on the title screen. Weird. But I feel relieved (can I have that hour of my life back, please??).