Silver Lining, all seven extra trophies
66. Frenemies: finish Old Friends.
67. Terminated: finish One Plus One Equals Win.
68. Unplugged: complete the Screwball chase.
69. The Wages of War: finish Aiding a Human.
70. Unacceptable: finish Scales of Justice.
71. Screwballed: earn Spectacular or better in all Silver Lining Screwball challenges.
72. The City Sleeps: reach 100% completion for Silver Lining.
Finish the chapter's story, then work through its remaining missions and activities. This is a continuation of the earlier DLC chapters, so I would play The Heist, Turf Wars, and Silver Lining in that order after the base story.
The three story DLC trophy sets don't require a particular gameplay difficulty. Their challenge-rating requirements still apply. Lowering combat difficulty doesn't automatically award a Spectacular score or complete a missing side mission.
Silver Lining, all seven extra trophies
· Games / Marvel's Spider-Man