Part 3, I posted about how the characters confused their nickname for their opponent with his actual name. "Bloodless Jack" was a character nickname for a deadly pair of brothers, Marcus and Alex. Marcus was the warrior while Alex was the assassin. When cornered, the warrior answered with bluster and the characters killed him off.
Of course this enraged his brother Alexander, the actual assassin. Alex retreated to his brother's mountain top Keep and sent wave upon wave of assassins to kill the player characters.
That obvious didn't work, anything less than Bloodless Jack himself was not going to be strong enough to take the whole party. Eventually, the hunt was turned on it's head and the players located Alexander's mountain top abode. Then they did something weird.
They could have stormed the fortress themselves, or raise an army to do so, but they did neither. They hired a sage to give them instructions to recharge the Staff of Wizardry. I messed up that plan with a rather obvious counter. The Staff needed to be recharged under the full moon within a mountaintop keep. You know, Alexander's Keep.
The players had exactly 8 charges in the Staff. They went to Plan B. They hired a horde of dwarves and hobbits to scout the land around the keep. They were smart about it, one assassin, one ranger and one hobbit per dwarven party to handle any natural or unnatural threat. They had several dozen parties. It was easy work, because they weren't being asked to fight, only scout and run.
I wasn't going to let the players assassinate Bloodless Jack, so a couple of the parties were captured and killed.
But raiding and sneaking wasn't their game. The dwarves found a weak point on the side of the mountain, a cliff face that couldn't be hit by weapons fire from the Keep. They used a Dig spell to remove the soil from the area. The dwarves dug an entrance 10 feet deep into the rock and near this opening the party and their minions assembled.
From their base, they attempted to storm the walls while the dwarves dug in another 20 feet. Then the plan changed. The characters retreated to their hidey hole and the wizard went to work. He used the remaining charges of Passwall to carve a hole deep into the mountain. The dwarves shored this cave open with their stonecraft and everyone else jammed all manner of debris in the unnatural cave. Within the hour, they had dozens of barrels of water, oil, bits of trees, rocks, mud, and dirt lining the Passwall cave.
When the mage concluded that enough junk blocked up the passageway, he released the outer Passwall spell inwards, sealing everything in place like a cork. From there, it was simply a matter of running away from the Keep, but being mindful not to run straight down the mountain.
As each Passwall spell expired, all kinds of flammable or incompressible material was crushed inwards. The pressure was incredible. The mountain cracked and the Keep came off it's foundations. The whole thing plunged to the base of the mountain. Bloodless Jack suffered a Disney-like death, but the players were thorough. They made sure they found a body.
It was a fascinating exercise in the physics of magic. One that I will never allow to be repeated. This was too much work to get rid of one bloody, +1 Staff.