This trophy is titled "
The Legacy" and it's an unmissable story based trophy for Episode 5, Chapter 4.
Chapter Walkthrough:
*** Spoiler - click to reveal ***After connecting the links in Chapter 3, Bruce will explain what happened to Alfred. Examine the misplaced picture to find a note from Lady Arkham.
In the Batcave, Bruce and Lucius are viewing a video from Lady Arkham. Alfred leaves visual clues for Bruce.
Pick up the cowl to use its VR to piece together the reflections by examining the thug, camera and stairs.
Lucius will advance to the second signal and there's a water heater to the left and boxes to the right which need to be inspected. Lucius will advance to the third signal and bottom center is a Masons Stamp between the tripod legs and Lady Arkham to inspect. On the fourth signal, examine the window to complete the last of Alfred's clues. On the virtual map, select all four options to narrow down the results to three homes. Select the right location and get dressed in one of the early Bat Suits to go save Alfred.
Back at the Vale Residence, Batman will walk through the front door. He'll walk down the basement stairs, but there's a trap on it, so be ready for the quick time event to avoid it. In the basement, examine the Blood Splatter on the wall, the Chair, and the Blood Smear on the floor to the left of the chair. Examine and then push in the wall to find a grate and rope ladder. Remove the Grate and jump down the hole. Examine the room by looking at the Paintings to unlock more items to investigate. Examine the Chalk to find hidden paintings in the room. Examine both and then link them together to discover Alfred's clue for Batman.
Batman arrives at Arkham Asylum to find the Children of Arkham in control of the facility. Perform the QTE to take out one of the Children and unlock the trophy.