Here we guide on how to unlock the Backroad Trophy / Achievement. This involves destroying a wall in Chapter 4
Okay first you want to be on Mission 4. Now during this mission the story will take you to a wall with Graffiti on it, this is also where you will get a Tutorial message too
Now stand close to this wall and Summon Nightmare (L1 – PS4) Nightmare should now smash through the Graffiti wall.
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