I remember one time I got stuck for a while and had to ask AlphaDawg for help - it was in regards to this old mans clue.
There's a clue in one of the dungeons that says, "Go back the way you came". Basically it meant that you have to go through a secret passage, and then try to go back, only this time the secret passage takes you to a different place. I can't remember which level that was in, but I think the level was blue colored.