Four Against Darkness: Caves of the Kobold Slave-MastersExpansion

From BoardGameGeek:

Elvyn, an elderly, much-loved adventurer has disappeared, and an escaped goblin slave confirms that he's been captured by kobold slavers. Now the town council has offered you a nice sum of money to enter the caves and bring him back. Dare you enter the kobold caves and return before nightfall? Caves of the Kobold Slave-Masters is a 3-session solo adventure for Four Against Darkness. 21 pages. Per the text, it's recommended for characters that are level 1 or 2.