Okay, have to ask you guys who've completed HZD at various difficulties. When you say completed do you mean all the quests/activities or just through the main story? I've been playing more and seems every time I turn around there's another quest!
I never did like the whole trophy thing for any games.
There's a lot of HZD quests that are interconnected or chained in order to complete. If you're looking to complete all Achievements & Trophies there's a lot of sites showing what needs to be done.
There's a few quests that I don't like for HZD (worse with Horizon Forbidden West) but pretty much completed what I could on the first couple of playthroughs. On additional playthroughs, I skipped some of the simple & annoying quests. But otherwise finished both games at various levels of difficulty, including NG+ ultra-hard. I did all HZD Hunter challenges complete on one play-through, but other play-throughs just got enough suns to join Hunter's Lodge & the related quests. Got all the collectables like the flowers, Banuk figures, Vantage Points, Ancient Vessels. Never found all of the Audio Data points but got the other data points. Only did the Frozen Wilds a couple of times. I expected it to add to the story line a lot more than it did.
EDIT: After checking, didn't realize that Trophies are SONY's on PlayStation, not on PC - so I never missed them on PC version.