Flattery will get you everywhere, DragonofIntellect - and thank you for digging this old thread up!

It certainly is possible to continue, though I can't promise anything resembling regular updates, especially with two other Story Hours to work on. But I'll set a goal of trying to move forward at least one update a month at the very minimum.
Seeing this thread on the first page again gave me a little inspiration, and I typed up a post to get it moving again. I've basically glossed over the return trip to the mines, as looking at my notes the fights were fairly repetitive encounters with rats, spiders, scorpions, and darkmantles. I certainly don't recall this being a very exciting leg of the adventure, and not very profitable either, though Welby did find a magic backpack on an old corpse buried beneath some rubble. Anyway, without further delay, here's what happened next:
*****
They descended the broad steps they had found before and entered the cursed mines of Duernfast. The large entry chamber had not been disturbed by man or dwarf in many long years, and was strewn with aging carts and wheelbarrows, rusting mining equipment, and broken rock from the crumbling walls. Three open tunnels, roughly hewn from the rock, led out of the area and into the mines. Jack entered the area carefully, motioning for the others to hold back as his eyes scanned the stonework. Finally, he nodded, satisfied; despite the years of neglect, the room was not in danger of immediate collapse. He waved the others to enter, turning to them with a smug grin.
"Now that's dwarven workmanship for ya," he stated, planting his hands on his hips. But he saw Welby's eyes grow wide with alarm and turned just in time to see several scorpions grown to more than a foot in size scuttling from beneath the debris and skittering across the floor in their direction.
The battle was brief and one-sided. The adventurers outnumbered the insects and worked in pairs to kill them as they came in - one concentrating on keeping the poisonous stingers at bay while the other focused on finishing the beast.
"Well, that was simple," Jack grunted, cleaning the ichor from his blade.
"Let us hope that is the worst we have to face in the mines. Though I fear far worse than vermin lurks in the darkness," predicted Artemis.
"Which way?" Welby stamped his feet, impatient to get on with the exploration.
"Reckon any's as good as t'other," Jack pointed to the western most tunnel, the closest to where they stood, and they filed through the chamber to the exit. The tunnels were all rough, unfinished, but generally had smooth floors that were at least wide enough to allow an orecart passage. Artemis' fears proved unfounded however, as the mines proved to be inhabited primarily by rats, bats, more vermin, and small scavengers that were wary of attacking such a large group. In less than an hour, they had explored the current level and stood in a small room containing a shaft that led deeper into the mines.
The shaft had been sealed with a sturdy iron grate, silver runes engraved into every inch of the thick bars. A deathly chill emanated from the opening. The companions gathered around the hole and peered through at the room below. The Crow lit a torch and tossed it down, illuminating another small chamber with several tunnels branching out into the darkness. There was movement at one of the openings; the cold grew stronger and more intense, the torch sputtered and died, and a thing of darkness inched into the room, standing out as a patch of black purer than the unlit depths, paralyzing the onlookers with terror.
There was a hiss as Artimas inhaled sharply. "Arawn preserve us," he breathed.
"What in the name of Dumathoin is that thing?" asked Quinn.
"The Course o' the Moines - Oi ne'er b'leev'd," wailed Fredegar. "Flee!"
But fear held them, and their legs seemed frozen to the floor. Then the thing reached up and pressed against the grate - the silver runes flared to life, shining light through the chamber, a terrible cry erupted from the monster, and the companions were suddenly in control of their limbs again, running and stumbling headlong to the mine entrance, up the stairs, not stopping until they had exited Duernfast again, where they collapsed gasping into the grass and lay until the terror subsided.
*****
An unpleasant surprise awaited them upon their return to Travensburg. A sizeable group of men-at-arms stood in the Foaming Mug, engaged in animated conversation with an agitated Ned Nebbly. As the group stumbled wearily into the bar, a pixie-like voice exclaimed, "There, thats them! The ones that threatened me!"
It was the halfling girl Anemone. The men turned, revealing tabards emblazoned with crimson and gold crosses. Ike gasped; the Crusaders had arrived in Travensburg.
Next: Bar fight!