I play on both pc and ps5. I have completed all areas in Nahantu and i am at 58/58 but i think i did it while playing on pc so the ps5 trophy is unobtainable.
i didn’t have the trophy for the campaign either, but i managed to get after partying with a friend that finished the campaign while i was on ps5.
the problem with Nahantu sightseer trophy is that you cannot discover ever again nahantu on ps5 so i don’t know how to get it.
some of the achievements i got on pc for the main game like the campaign and killing lilith were just completed as trophies when i logged in on ps5 for the first time.
Please fix this trophy bug, it happens to a lot of people.
https://www.reddit.com/r/diablo4/comments/1g7ul4r/is_the_nahantu_sightseer_bugged/