For anybody going back through A Plague Tale: Innocence for the trophies, here's the breakdown. This is the first game, not Requiem. There are chapter and location spoilers below.
You don't need an online mode or a special difficulty run. The PlayStation list has 36 trophies including the platinum, Innocence. Finish the story, pick up the collectibles, do the little chapter-specific things, and finish the sling and equipment upgrades.
The upgrades are the part to plan around. Collect materials as you go instead of assuming you can come back at the end and farm the same pile over and over. Chapter Select restores the resources and upgrades you had at that point. If you're rebuilding toward an upgrade trophy, keep playing the chapters in order. Jumping ahead won't carry those newly collected materials with you.
For the story trophies, chapters 1 through 16 each give you one:
1: The de Rune Legacy
2: The Strangers
3: Retribution
4: The Apprentice
5: The Ravens' Spoils
6: Damaged Goods
7: The Path Before Us
8: Our Home
9: In the Shadow of Ramparts
10: The Way of Roses
11: Alive
12: All That Remains
13: Penance
14: Blood Ties
15: Remembrance
16: Coronation
Then finish the epilogue, For Each Other, for Knights! That's the story side covered.
For anybody going back through A Plague Tale: Innocence for the trophies, here's the breakdown. This is the first game, not Requiem. There are chapter and location spoilers below.
· Games / A Plague Tale: Innocence