Siege of Runedar

The Siege of Runedar: Escape the Orcs besieging the fortress but don't forget the gold!

Since time immemorial the mines of Runedar have supplied generations of Dwarves with gold. A happy coincidence has lead your small group of dwarves, that were left guarding the fortress, to find a new vein of gold. Now, just as you were about to take the gold to the nearest stronghold, you find that the fortress is surrounded by Orcs, willing to do anything to get their hands on it. You must contain them long enough to dig a tunnel under the mountain to escape the siege and save the gold.