When Kayley feels a wind, use the bracelet. When yu find the stairs, remember where they are and note that it goes nowhere. You will run across 4 rocks, running over them gives you either a whistle or an error message. Find which rock gives the whistle. This is the 1st in the series, experiment until you figure out the series. When I played (not sure if it's random or not) When I played the order was:
OOOO 4213
Go back to the stairs which now go somewhere. Save and equip the dragon scale. Hop across the lave and when you reach the end of the hall, save. Go into the round table room and walk to the top. You'll see the boss, the Super-Minion. He can shoot in 4 directions at once, and always stops and squats before doing so. Follow him around dodging him, then hit him when he ducks. If you hit in time he won't shoot. Continue until it's dead.