Very rarely in this trial do I have a hard time finding posters and getting all 3 after the first key was no exception. The map layout was a little unlucky with the first key and I had lots of close calls with the giant lady and almost stepped on glass near the end.

Thankfully I had the Smash perk to help me with all the planks near the third key. Also didnt know throwing bricks on the ground near enemies counts as a distraction so that's good to know for achievement hunting.