Wandering around the slums. I need to trigger something to find out what is in the crack in the wall. I need to trigger something that lets me get beyond A pink arrow on the ground in one place (looks like a factory) and beyond a green arrow (I think it is green) where there is a fence. I can't get into the casino.
And I was surprised to find there are hidden areas here. Found one and am now back at bumping into walls. I thought that that was over with the exclamation points and question marks.
Help would be great. Thank you in advance.