[quote]Just roaming around the open world[/quote] Are you doing the puzzles in Quagmire, Florescent Canal, and Miasma? Ever since the patch to stop people cheesing only those 3 areas count. if you head to a off-shoot section like Alluring Curtain it wont count.
which ones did you do, I don't think they all count. Lighting the torches counts if I'm not mistaken