[Dalin]

Art - clues or interesting history in a chamber of murals. Add magic (gates, divination, etc.) if desired.

Captured - delvers need to escape, find their gear, exact revenge, etc.

Monster-too-deadly-to-fight - must sneak past, distract, or outsmart

Physical challenge - must move heavy object, rebuild bridge, redirect water, etc. Magic can help but challenge needs more than just a single spell.